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author | Sascha Hauer <s.hauer@pengutronix.de> | 2010-02-08 13:44:27 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2010-02-08 14:37:49 +0100 |
commit | 582da05383cc3c8ef7ba7c8c2ff7b7eaff32c584 (patch) | |
tree | 01d4077a14bc83976b902b1960a3074f419cdcf3 /drivers | |
parent | 8b828993411963d261ed6760b6fb7cea19b2cce3 (diff) | |
download | barebox-582da05383cc3c8ef7ba7c8c2ff7b7eaff32c584.tar.gz barebox-582da05383cc3c8ef7ba7c8c2ff7b7eaff32c584.tar.xz |
cfi_flash: remove old driver and switch to new one
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/nor/Kconfig | 34 | ||||
-rw-r--r-- | drivers/nor/Makefile | 3 | ||||
-rw-r--r-- | drivers/nor/cfi_flash.c | 1523 | ||||
-rw-r--r-- | drivers/nor/cfi_flash_amd.c | 2 | ||||
-rw-r--r-- | drivers/nor/cfi_flash_intel.c | 2 | ||||
-rw-r--r-- | drivers/nor/cfi_flash_new.c | 997 |
6 files changed, 515 insertions, 2046 deletions
diff --git a/drivers/nor/Kconfig b/drivers/nor/Kconfig index 7d9497e3be..43a6b845b7 100644 --- a/drivers/nor/Kconfig +++ b/drivers/nor/Kconfig @@ -9,35 +9,19 @@ config DRIVER_CFI If you have NOR Flash devices connected to your system and wish to use them say yes here. -config DRIVER_CFI_NEW - depends on DRIVER_CFI - default y - bool "new cfi flash driver" - help - The old cfi flash driver is mainly an adopted version from U-Boot v1 - whereas the new driver contains some more experimental features such - as selecting the supported chiptypes and bus widths making the driver - smaller. - Normally you should stick with the new driver, but if you experience - troubles you could try the old driver. Please report if the new driver - breaks something. - -config DRIVER_CFI_OLD - bool "old cfi flash driver" - default y - depends on !DRIVER_CFI_NEW - config DRIVER_CFI_INTEL - depends on DRIVER_CFI_NEW + default y + depends on DRIVER_CFI bool "Support Intel flash chips" config DRIVER_CFI_AMD - depends on DRIVER_CFI_NEW + default y + depends on DRIVER_CFI bool "support AMD flash chips" config DRIVER_CFI_BANK_WIDTH_1 bool "Support 8-bit buswidth" - depends on DRIVER_CFI_NEW + depends on DRIVER_CFI default y help If you wish to support CFI devices on a physical bus which is @@ -45,7 +29,7 @@ config DRIVER_CFI_BANK_WIDTH_1 config DRIVER_CFI_BANK_WIDTH_2 bool "Support 16-bit buswidth" - depends on DRIVER_CFI_NEW + depends on DRIVER_CFI default y help If you wish to support CFI devices on a physical bus which is @@ -53,7 +37,7 @@ config DRIVER_CFI_BANK_WIDTH_2 config DRIVER_CFI_BANK_WIDTH_4 bool "Support 32-bit buswidth" - depends on DRIVER_CFI_NEW + depends on DRIVER_CFI default y help If you wish to support CFI devices on a physical bus which is @@ -61,7 +45,7 @@ config DRIVER_CFI_BANK_WIDTH_4 config DRIVER_CFI_BANK_WIDTH_8 bool "Support 64-bit buswidth" - depends on DRIVER_CFI_NEW + depends on DRIVER_CFI default n help If you wish to support CFI devices on a physical bus which is @@ -69,6 +53,6 @@ config DRIVER_CFI_BANK_WIDTH_8 config CFI_BUFFER_WRITE bool "use cfi driver with buffer write" - depends on DRIVER_CFI || DRIVER_CFI_NEW + depends on DRIVER_CFI || DRIVER_CFI endmenu diff --git a/drivers/nor/Makefile b/drivers/nor/Makefile index d5b570999a..d2550436d2 100644 --- a/drivers/nor/Makefile +++ b/drivers/nor/Makefile @@ -1,5 +1,4 @@ -obj-$(CONFIG_DRIVER_CFI_OLD) += cfi_flash.o -obj-$(CONFIG_DRIVER_CFI_NEW) += cfi_flash_new.o +obj-$(CONFIG_DRIVER_CFI) += cfi_flash.o obj-$(CONFIG_DRIVER_CFI_INTEL) += cfi_flash_intel.o obj-$(CONFIG_DRIVER_CFI_AMD) += cfi_flash_amd.o diff --git a/drivers/nor/cfi_flash.c b/drivers/nor/cfi_flash.c index 1d8ed2d6e5..c8e07c4d6c 100644 --- a/drivers/nor/cfi_flash.c +++ b/drivers/nor/cfi_flash.c @@ -31,9 +31,8 @@ * */ -#ifdef CONFIG_ENABLE_FLASH_NOISE -# define DEBUG -#endif +/* The DEBUG define must be before common to enable debugging */ +/* #define DEBUG */ #include <common.h> #include <asm/byteorder.h> @@ -42,100 +41,24 @@ #include <init.h> #include <malloc.h> #include <cfi_flash.h> +#include <asm/io.h> #include <errno.h> -#define FLASH_CMD_CFI 0x98 -#define FLASH_CMD_READ_ID 0x90 -#define FLASH_CMD_RESET 0xff -#define FLASH_CMD_BLOCK_ERASE 0x20 -#define FLASH_CMD_ERASE_CONFIRM 0xD0 -#define FLASH_CMD_WRITE 0x40 -#define FLASH_CMD_PROTECT 0x60 -#define FLASH_CMD_PROTECT_SET 0x01 -#define FLASH_CMD_PROTECT_CLEAR 0xD0 -#define FLASH_CMD_CLEAR_STATUS 0x50 -#define FLASH_CMD_WRITE_TO_BUFFER 0xE8 -#define FLASH_CMD_WRITE_BUFFER_CONFIRM 0xD0 - -#define FLASH_STATUS_DONE 0x80 -#define FLASH_STATUS_ESS 0x40 -#define FLASH_STATUS_ECLBS 0x20 -#define FLASH_STATUS_PSLBS 0x10 -#define FLASH_STATUS_VPENS 0x08 -#define FLASH_STATUS_PSS 0x04 -#define FLASH_STATUS_DPS 0x02 -#define FLASH_STATUS_R 0x01 -#define FLASH_STATUS_PROTECT 0x01 - -#define AMD_CMD_RESET 0xF0 -#define AMD_CMD_WRITE 0xA0 -#define AMD_CMD_ERASE_START 0x80 -#define AMD_CMD_ERASE_SECTOR 0x30 -#define AMD_CMD_UNLOCK_START 0xAA -#define AMD_CMD_UNLOCK_ACK 0x55 -#define AMD_CMD_WRITE_TO_BUFFER 0x25 -#define AMD_CMD_WRITE_BUFFER_CONFIRM 0x29 - -#define AMD_STATUS_TOGGLE 0x40 -#define AMD_STATUS_ERROR 0x20 - -#define AMD_ADDR_ERASE_START ((info->portwidth == FLASH_CFI_8BIT) ? 0xAAA : 0x555) -#define AMD_ADDR_START ((info->portwidth == FLASH_CFI_8BIT) ? 0xAAA : 0x555) -#define AMD_ADDR_ACK ((info->portwidth == FLASH_CFI_8BIT) ? 0x555 : 0x2AA) - -#define FLASH_OFFSET_MANUFACTURER_ID 0x00 -#define FLASH_OFFSET_DEVICE_ID 0x01 -#define FLASH_OFFSET_DEVICE_ID2 0x0E -#define FLASH_OFFSET_DEVICE_ID3 0x0F -#define FLASH_OFFSET_CFI 0x55 -#define FLASH_OFFSET_CFI_ALT 0x555 -#define FLASH_OFFSET_CFI_RESP 0x10 -#define FLASH_OFFSET_PRIMARY_VENDOR 0x13 -#define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15 /* extended query table primary addr */ -#define FLASH_OFFSET_WTOUT 0x1F -#define FLASH_OFFSET_WBTOUT 0x20 -#define FLASH_OFFSET_ETOUT 0x21 -#define FLASH_OFFSET_CETOUT 0x22 -#define FLASH_OFFSET_WMAX_TOUT 0x23 -#define FLASH_OFFSET_WBMAX_TOUT 0x24 -#define FLASH_OFFSET_EMAX_TOUT 0x25 -#define FLASH_OFFSET_CEMAX_TOUT 0x26 -#define FLASH_OFFSET_SIZE 0x27 -#define FLASH_OFFSET_INTERFACE 0x28 -#define FLASH_OFFSET_BUFFER_SIZE 0x2A -#define FLASH_OFFSET_NUM_ERASE_REGIONS 0x2C -#define FLASH_OFFSET_ERASE_REGIONS 0x2D -#define FLASH_OFFSET_PROTECT 0x02 -#define FLASH_OFFSET_USER_PROTECTION 0x85 -#define FLASH_OFFSET_INTEL_PROTECTION 0x81 - -#define CFI_CMDSET_NONE 0 -#define CFI_CMDSET_INTEL_EXTENDED 1 -#define CFI_CMDSET_AMD_STANDARD 2 -#define CFI_CMDSET_INTEL_STANDARD 3 -#define CFI_CMDSET_AMD_EXTENDED 4 -#define CFI_CMDSET_MITSU_STANDARD 256 -#define CFI_CMDSET_MITSU_EXTENDED 257 -#define CFI_CMDSET_SST 258 - -#ifdef CFG_FLASH_CFI_AMD_RESET /* needed for STM_ID_29W320DB on UC100 */ -# undef FLASH_CMD_RESET -# define FLASH_CMD_RESET AMD_CMD_RESET /* use AMD-Reset instead */ -#endif - -typedef union { - unsigned char c; - unsigned short w; - unsigned long l; - unsigned long long ll; -} cfiword_t; - -typedef union { - volatile unsigned char *cp; - volatile unsigned short *wp; - volatile unsigned long *lp; - volatile unsigned long long *llp; -} cfiptr_t; +/* + * This file implements a Common Flash Interface (CFI) driver for barebox. + * The width of the port and the width of the chips are determined at initialization. + * These widths are used to calculate the address for access CFI data structures. + * + * References + * JEDEC Standard JESD68 - Common Flash Interface (CFI) + * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes + * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets + * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet + * AMD CFI Specification, Release 2.0 December 1, 2001 + * AMD/Spansion Application Note: Migration from Single-byte to Three-byte + * Device IDs, Publication Number 25538 Revision A, November 8, 2001 + * + */ #define NUM_ERASE_REGIONS 4 /* max. number of erase regions */ @@ -149,45 +72,100 @@ static uint flash_offset_cfi[2]={FLASH_OFFSET_CFI,FLASH_OFFSET_CFI_ALT}; #endif -/*----------------------------------------------------------------------- +/* * Functions */ -typedef unsigned long flash_sect_t; - -static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c); -static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf); -static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd); -static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect); -static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd); -static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd); -static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd); -static void flash_read_jedec_ids (flash_info_t * info); -static int flash_detect_cfi (flash_info_t * info); -static int flash_write_cfiword (flash_info_t * info, ulong dest, cfiword_t cword); -static int flash_full_status_check (flash_info_t * info, flash_sect_t sector, - uint64_t tout, char *prompt); -static ulong flash_get_size (flash_info_t *info, ulong base); -#ifdef CONFIG_CFI_BUFFER_WRITE -static int flash_write_cfibuffer (flash_info_t * info, ulong dest, const uchar * cp, int len); +static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) +{ +#if defined(__LITTLE_ENDIAN) + unsigned short w; + unsigned int l; + unsigned long long ll; #endif -static int write_buff (flash_info_t *info, const uchar *src, ulong addr, ulong cnt); -static int flash_real_protect(flash_info_t *info, long sector, int prot); + if (bankwidth_is_1(info)) { + cword->c = c; + } else if (bankwidth_is_2(info)) { +#if defined(__LITTLE_ENDIAN) + w = c; + w <<= 8; + cword->w = (cword->w >> 8) | w; +#else + cword->w = (cword->w << 8) | c; +#endif + } else if (bankwidth_is_4(info)) { +#if defined(__LITTLE_ENDIAN) + l = c; + l <<= 24; + cword->l = (cword->l >> 8) | l; +#else + cword->l = (cword->l << 8) | c; +#endif + } else if (bankwidth_is_8(info)) { +#if defined(__LITTLE_ENDIAN) + ll = c; + ll <<= 56; + cword->ll = (cword->ll >> 8) | ll; +#else + cword->ll = (cword->ll << 8) | c; +#endif + } +} -/*----------------------------------------------------------------------- - * create an address based on the offset and the port width - */ -static inline uchar *flash_make_addr (flash_info_t * info, flash_sect_t sect, uint offset) +static int flash_write_cfiword (flash_info_t * info, ulong dest, + cfiword_t cword) { - return ((uchar *) (info->start[sect] + (offset * info->portwidth))); + cfiptr_t ctladdr; + cfiptr_t cptr; + int flag; + + ctladdr.cp = flash_make_addr (info, 0, 0); + cptr.cp = (uchar *) dest; + + /* Check if Flash is (sufficiently) erased */ + if (bankwidth_is_1(info)) { + flag = ((cptr.cp[0] & cword.c) == cword.c); + } else if (bankwidth_is_2(info)) { + flag = ((cptr.wp[0] & cword.w) == cword.w); + } else if (bankwidth_is_4(info)) { + flag = ((cptr.lp[0] & cword.l) == cword.l); + } else if (bankwidth_is_8(info)) { + flag = ((cptr.llp[0] & cword.ll) == cword.ll); + } else + return 2; + + if (!flag) + return 2; + + /* Disable interrupts which might cause a timeout here */ +// flag = disable_interrupts (); + + info->cfi_cmd_set->flash_prepare_write(info); + + if (bankwidth_is_1(info)) { + cptr.cp[0] = cword.c; + } else if (bankwidth_is_2(info)) { + cptr.wp[0] = cword.w; + } else if (bankwidth_is_4(info)) { + cptr.lp[0] = cword.l; + } else if (bankwidth_is_8(info)) { + cptr.llp[0] = cword.ll; + } + + /* re-enable interrupts if necessary */ + if (flag) + enable_interrupts (); + + return flash_status_check (info, find_sector (info, dest), + info->write_tout, "write"); } #ifdef DEBUG -/*----------------------------------------------------------------------- +/* * Debug support */ -static void print_longlong (char *str, unsigned long long data) +void print_longlong (char *str, unsigned long long data) { int i; char *cp; @@ -196,6 +174,7 @@ static void print_longlong (char *str, unsigned long long data) for (i = 0; i < 8; i++) sprintf (&str[i * 2], "%2.2x", *cp++); } + static void flash_printqry (flash_info_t * info, flash_sect_t sect) { cfiptr_t cptr; @@ -222,23 +201,7 @@ static void flash_printqry (flash_info_t * info, flash_sect_t sect) } #endif - -/*----------------------------------------------------------------------- - * read a character at a port width address - */ -static inline uchar flash_read_uchar (flash_info_t * info, uint offset) -{ - uchar *cp; - - cp = flash_make_addr (info, 0, offset); -#if defined(__LITTLE_ENDIAN) - return (cp[0]); -#else - return (cp[info->portwidth - 1]); -#endif -} - -/*----------------------------------------------------------------------- +/* * read a short word by swapping for ppc format. */ static ushort flash_read_ushort (flash_info_t * info, flash_sect_t sect, uint offset) @@ -269,7 +232,7 @@ static ushort flash_read_ushort (flash_info_t * info, flash_sect_t sect, uint of return retval; } -/*----------------------------------------------------------------------- +/* * read a long word by picking the least significant byte of each maximum * port size word. Swap for ppc format. */ @@ -302,203 +265,269 @@ static ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offse return retval; } -static int flash_find_sector(flash_info_t * info, unsigned long adr) +/* + * detect if flash is compatible with the Common Flash Interface (CFI) + * http://www.jedec.org/download/search/jesd68.pdf + * +*/ +static int flash_detect_cfi (flash_info_t * info) { - int i; - unsigned long end; + int cfi_offset; + debug ("flash detect cfi\n"); - for (i = 0; i < info->sector_count; i++) { - if (i + 1 == info->sector_count) - end = info->start[0] + info->size - 1; - else - end = info->start[i + 1] - 1; - if (adr >= info->start[i] && adr <= end) - return i; + for (info->portwidth = CFG_FLASH_CFI_WIDTH; + info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) { + for (info->chipwidth = FLASH_CFI_BY8; + info->chipwidth <= info->portwidth; + info->chipwidth <<= 1) { + flash_write_cmd (info, 0, 0, info->cmd_reset); + for (cfi_offset=0; cfi_offset < sizeof(flash_offset_cfi)/sizeof(uint); cfi_offset++) { + flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset], FLASH_CMD_CFI); + if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q') + && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') + && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) { + info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE); + info->cfi_offset=flash_offset_cfi[cfi_offset]; + debug ("device interface is %d\n", + info->interface); + debug ("found port %d chip %d ", + info->portwidth, info->chipwidth); + debug ("port %d bits chip %d bits\n", + info->portwidth << CFI_FLASH_SHIFT_WIDTH, + info->chipwidth << CFI_FLASH_SHIFT_WIDTH); + return 1; + } + } + } } - return -1; + debug ("not found\n"); + return 0; } -/*----------------------------------------------------------------------- +/* + * The following code cannot be run from FLASH! */ -static int flash_erase_one (flash_info_t * info, long sect) +static ulong flash_get_size (flash_info_t *info, ulong base) { - int rcode = 0; + int i, j; + flash_sect_t sect_cnt; + unsigned long sector; + unsigned long tmp; + int size_ratio; + uchar num_erase_regions; + int erase_region_size; + int erase_region_count; + int geometry_reversed = 0; - switch (info->vendor) { - case CFI_CMDSET_INTEL_STANDARD: - case CFI_CMDSET_INTEL_EXTENDED: - flash_write_cmd (info, sect, 0, FLASH_CMD_CLEAR_STATUS); - flash_write_cmd (info, sect, 0, FLASH_CMD_BLOCK_ERASE); - flash_write_cmd (info, sect, 0, FLASH_CMD_ERASE_CONFIRM); - break; - case CFI_CMDSET_AMD_STANDARD: - case CFI_CMDSET_AMD_EXTENDED: - flash_unlock_seq (info, sect); - flash_write_cmd (info, sect, AMD_ADDR_ERASE_START, - AMD_CMD_ERASE_START); - flash_unlock_seq (info, sect); - flash_write_cmd (info, sect, 0, AMD_CMD_ERASE_SECTOR); - break; - default: - debug ("Unkown flash vendor %d\n", - info->vendor); - break; - } - if (flash_full_status_check - (info, sect, info->erase_blk_tout, "erase")) { - rcode = 1; - } else - putchar('.'); + info->ext_addr = 0; + info->cfi_version = 0; +#ifdef CFG_FLASH_PROTECTION + info->legacy_unlock = 0; +#endif - return rcode; -} + /* first only malloc space for the first sector */ + info->start = malloc(sizeof(ulong)); -static int cfi_erase(struct cdev *cdev, size_t count, unsigned long offset) -{ - flash_info_t *finfo = (flash_info_t *)cdev->priv; - unsigned long start, end; - int i, ret = 0; + info->start[0] = base; + info->protect = 0; - debug("%s: erase 0x%08x (size %d)\n", __FUNCTION__, offset, count); + if (flash_detect_cfi (info)) { + info->vendor = flash_read_ushort (info, 0, + FLASH_OFFSET_PRIMARY_VENDOR); + switch (info->vendor) { +#ifdef CONFIG_DRIVER_CFI_INTEL + case CFI_CMDSET_INTEL_EXTENDED: + case CFI_CMDSET_INTEL_STANDARD: + info->cfi_cmd_set = &cfi_cmd_set_intel; + break; +#endif +#ifdef CONFIG_DRIVER_CFI_AMD + case CFI_CMDSET_AMD_STANDARD: + case CFI_CMDSET_AMD_EXTENDED: + info->cfi_cmd_set = &cfi_cmd_set_amd; + break; +#endif + default: + printf("unsupported vendor\n"); + return 0; + } + info->cfi_cmd_set->flash_read_jedec_ids (info); + flash_write_cmd (info, 0, info->cfi_offset, FLASH_CMD_CFI); + num_erase_regions = flash_read_uchar (info, + FLASH_OFFSET_NUM_ERASE_REGIONS); + info->ext_addr = flash_read_ushort (info, 0, + FLASH_OFFSET_EXT_QUERY_T_P_ADDR); + if (info->ext_addr) { + info->cfi_version = (ushort) flash_read_uchar (info, + info->ext_addr + 3) << 8; + info->cfi_version |= (ushort) flash_read_uchar (info, + info->ext_addr + 4); + } +#ifdef DEBUG + flash_printqry (info, 0); +#endif + switch (info->vendor) { + case CFI_CMDSET_INTEL_STANDARD: + case CFI_CMDSET_INTEL_EXTENDED: + default: + info->cmd_reset = FLASH_CMD_RESET; +#ifdef CFG_FLASH_PROTECTION + /* read legacy lock/unlock bit from intel flash */ + if (info->ext_addr) { + info->legacy_unlock = flash_read_uchar (info, + info->ext_addr + 5) & 0x08; + } +#endif + break; + case CFI_CMDSET_AMD_STANDARD: + case CFI_CMDSET_AMD_EXTENDED: + info->cmd_reset = AMD_CMD_RESET; + /* check if flash geometry needs reversal */ + if (num_erase_regions <= 1) + break; + /* reverse geometry if top boot part */ + if (info->cfi_version < 0x3131) { + /* CFI < 1.1, try to guess from device id */ + if ((info->device_id & 0x80) != 0) { + geometry_reversed = 1; + } + break; + } + /* CFI >= 1.1, deduct from top/bottom flag */ + /* note: ext_addr is valid since cfi_version > 0 */ + if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) { + geometry_reversed = 1; + } + break; + } - start = flash_find_sector(finfo, cdev->dev->map_base + offset); - end = flash_find_sector(finfo, cdev->dev->map_base + offset + count - 1); + debug ("manufacturer is %d\n", info->vendor); + debug ("manufacturer id is 0x%x\n", info->manufacturer_id); + debug ("device id is 0x%x\n", info->device_id); + debug ("device id2 is 0x%x\n", info->device_id2); + debug ("cfi version is 0x%04x\n", info->cfi_version); - for (i = start; i <= end; i++) { - ret = flash_erase_one (finfo, i); - if (ret) - goto out; - } -out: - putchar('\n'); - return ret; -} + size_ratio = info->portwidth / info->chipwidth; + /* if the chip is x8/x16 reduce the ratio by half */ + if ((info->interface == FLASH_CFI_X8X16) + && (info->chipwidth == FLASH_CFI_BY8)) { + size_ratio >>= 1; + } + debug ("size_ratio %d port %d bits chip %d bits\n", + size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH, + info->chipwidth << CFI_FLASH_SHIFT_WIDTH); + debug ("found %d erase regions\n", num_erase_regions); + sect_cnt = 0; + sector = base; -static int cfi_protect(struct cdev *cdev, size_t count, unsigned long offset, int prot) -{ - flash_info_t *finfo = (flash_info_t *)cdev->priv; - unsigned long start, end; - int i, ret = 0; + for (i = 0; i < num_erase_regions; i++) { + if (i > NUM_ERASE_REGIONS) { + printf ("%d erase regions found, only %d used\n", + num_erase_regions, NUM_ERASE_REGIONS); + break; + } + if (geometry_reversed) + tmp = flash_read_long (info, 0, + FLASH_OFFSET_ERASE_REGIONS + + (num_erase_regions - 1 - i) * 4); + else + tmp = flash_read_long (info, 0, + FLASH_OFFSET_ERASE_REGIONS + + i * 4); + erase_region_size = + (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128; + tmp >>= 16; + erase_region_count = (tmp & 0xffff) + 1; + debug ("erase_region_count = %d erase_region_size = %d\n", + erase_region_count, erase_region_size); - debug("%s: %sprotect 0x%08x (size %d)\n", - __FUNCTION__, (prot? "" : "un"), offset, count); + /* increase the space malloced for the sector start addresses */ + info->start = realloc(info->start, sizeof(ulong) * (erase_region_count + sect_cnt)); + info->protect = realloc(info->protect, sizeof(uchar) * (erase_region_count + sect_cnt)); - start = flash_find_sector(finfo, cdev->dev->map_base + offset); - end = flash_find_sector(finfo, cdev->dev->map_base + offset + count - 1); + for (j = 0; j < erase_region_count; j++) { + info->start[sect_cnt] = sector; + sector += (erase_region_size * size_ratio); - for (i = start; i <= end; i++) { - ret = flash_real_protect (finfo, i, prot); - if (ret) - goto out; - } -out: - putchar('\n'); - return ret; -} + /* + * Only read protection status from supported devices (intel...) + */ + switch (info->vendor) { + case CFI_CMDSET_INTEL_EXTENDED: + case CFI_CMDSET_INTEL_STANDARD: + info->protect[sect_cnt] = + flash_isset (info, sect_cnt, + FLASH_OFFSET_PROTECT, + FLASH_STATUS_PROTECT); + break; + default: + info->protect[sect_cnt] = 0; /* default: not protected */ + } -static ssize_t cfi_write(struct cdev *cdev, const void* buf, size_t count, unsigned long offset, ulong flags) -{ - flash_info_t *finfo = (flash_info_t *)cdev->priv; - int ret; + sect_cnt++; + } + } - debug("cfi_write: buf=0x%08x addr=0x%08x count=0x%08x\n",buf, cdev->dev->map_base + offset, count); + info->sector_count = sect_cnt; + /* multiply the size by the number of chips */ + info->size = (1 << flash_read_uchar (info, FLASH_OFFSET_SIZE)) * size_ratio; + info->buffer_size = (1 << flash_read_ushort (info, 0, FLASH_OFFSET_BUFFER_SIZE)); + tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_ETOUT); + info->erase_blk_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT))); + tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT)) * + (1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT)); + info->buffer_write_tout = tmp * 1000; + tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT)) * + (1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT)); + info->write_tout = tmp * 1000; + info->flash_id = FLASH_MAN_CFI; + if ((info->interface == FLASH_CFI_X8X16) && (info->chipwidth == FLASH_CFI_BY8)) { + info->portwidth >>= 1; /* XXX - Need to test on x8/x16 in parallel. */ + } + } - ret = write_buff (finfo, buf, cdev->dev->map_base + offset, count); - return ret == 0 ? count : -1; + flash_write_cmd (info, 0, 0, info->cmd_reset); + return info->size; } -static void cfi_info (struct device_d* dev) +/* loop through the sectors from the highest address + * when the passed address is greater or equal to the sector address + * we have a match + */ +flash_sect_t find_sector (flash_info_t * info, ulong addr) { - flash_info_t *info = (flash_info_t *)dev->priv; - int i; - - if (info->flash_id != FLASH_MAN_CFI) { - puts ("missing or unknown FLASH type\n"); - return; - } - - printf ("CFI conformant FLASH (%d x %d)" - " Size: %ld MB in %d Sectors\n" - " ", - info->portwidth << 3,info->chipwidth << 3, - info->size >> 20, info->sector_count); + flash_sect_t sector; - switch (info->vendor) { - case CFI_CMDSET_INTEL_STANDARD: - printf ("Intel Standard"); - break; - case CFI_CMDSET_INTEL_EXTENDED: - printf ("Intel Extended"); - break; - case CFI_CMDSET_AMD_STANDARD: - printf ("AMD Standard"); - break; - case CFI_CMDSET_AMD_EXTENDED: - printf ("AMD Extended"); - break; - default: - printf ("Unknown (%d)", info->vendor); + for (sector = info->sector_count - 1; sector >= 0; sector--) { + if (addr >= info->start[sector]) break; } - printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X", - info->manufacturer_id, info->device_id); - if (info->device_id == 0x7E) { - printf("%04X", info->device_id2); - } - printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n", - info->erase_blk_tout, - info->write_tout); - if (info->buffer_size > 1) { - printf (" Buffer write timeout: %ld ms, buffer size: %d bytes\n", - info->buffer_write_tout, - info->buffer_size); - } + return sector; +} - puts ("\n Sector Start Addresses:"); - for (i = 0; i < info->sector_count; ++i) { - if ((i % 5) == 0) - printf ("\n"); -#ifdef CFG_FLASH_EMPTY_INFO - { - int k; - int size; - int erased; - volatile unsigned long *flash; +static int cfi_erase(struct cdev *cdev, size_t count, unsigned long offset) +{ + flash_info_t *finfo = (flash_info_t *)cdev->priv; + unsigned long start, end; + int i, ret = 0; - /* - * Check if whole sector is erased - */ - if (i != (info->sector_count - 1)) - size = info->start[i + 1] - info->start[i]; - else - size = info->start[0] + info->size - info->start[i]; - erased = 1; - flash = (volatile unsigned long *) info->start[i]; - size = size >> 2; /* divide by 4 for longword access */ - for (k = 0; k < size; k++) { - if (*flash++ != 0xffffffff) { - erased = 0; - break; - } - } + printf("%s: erase 0x%08x (size %d)\n", __FUNCTION__, offset, count); - /* print empty and read-only info */ - printf (" %08lX %c %s ", - info->start[i], - erased ? 'E' : ' ', - info->protect[i] ? "RO" : " "); - } -#else /* ! CFG_FLASH_EMPTY_INFO */ - printf (" %08lX %s ", - info->start[i], - info->protect[i] ? "RO" : " "); -#endif - } - putchar('\n'); - return; + start = find_sector(finfo, cdev->dev->map_base + offset); + end = find_sector(finfo, cdev->dev->map_base + offset + count - 1); + + for (i = start; i <= end; i++) { + ret = finfo->cfi_cmd_set->flash_erase_one(finfo, i); + if (ret) + goto out; + printf("."); + } +out: + putchar('\n'); + return ret; } -/*----------------------------------------------------------------------- +/* * Copy memory to flash, returns: * 0 - OK * 1 - write timeout @@ -533,7 +562,9 @@ static int write_buff (flash_info_t * info, const uchar * src, ulong addr, ulong } for (; (cnt == 0) && (i < info->portwidth); ++i, ++cp) flash_add_byte (info, &cword, (*(uchar *) cp)); - if ((rc = flash_write_cfiword (info, wp, cword)) != 0) + + rc = flash_write_cfiword (info, wp, cword); + if (rc) return rc; wp = cp; } @@ -559,7 +590,7 @@ static int write_buff (flash_info_t * info, const uchar * src, ulong addr, ulong i = buffered_size - (wp % buffered_size); if (i > cnt) i = cnt; - if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK) + if ((rc = info->cfi_cmd_set->flash_write_cfibuffer (info, wp, src, i)) != ERR_OK) return rc; i -= i & (info->portwidth - 1); wp += i; @@ -579,7 +610,7 @@ static int write_buff (flash_info_t * info, const uchar * src, ulong addr, ulong } #endif /* CONFIG_CFI_BUFFER_WRITE */ if (cnt == 0) { - return (0); + return 0; } /* @@ -609,7 +640,7 @@ static int flash_real_protect (flash_info_t * info, long sector, int prot) flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR); if ((retcode = - flash_full_status_check (info, sector, info->erase_blk_tout, + flash_status_check (info, sector, info->erase_blk_tout, prot ? "protect" : "unprotect")) == 0) { info->protect[sector] = prot; @@ -630,8 +661,132 @@ static int flash_real_protect (flash_info_t * info, long sector, int prot) return retcode; } +static int cfi_protect(struct cdev *cdev, size_t count, unsigned long offset, int prot) +{ + flash_info_t *finfo = (flash_info_t *)cdev->priv; + unsigned long start, end; + int i, ret = 0; + const char *action = (prot? "protect" : "unprotect"); + + printf("%s: %s 0x%08x (size %d)\n", __FUNCTION__, + action, cdev->dev->map_base + offset, count); + + start = find_sector(finfo, cdev->dev->map_base + offset); + end = find_sector(finfo, cdev->dev->map_base + offset + count - 1); + + for (i = start; i <= end; i++) { + ret = flash_real_protect (finfo, i, prot); + if (ret) + goto out; + } +out: + putchar('\n'); + return ret; +} + +static ssize_t cfi_write(struct cdev *cdev, const void *buf, size_t count, unsigned long offset, ulong flags) +{ + flash_info_t *finfo = (flash_info_t *)cdev->priv; + int ret; + + debug("cfi_write: buf=0x%08x addr=0x%08x count=0x%08x\n",buf, cdev->dev->map_base + offset, count); + + ret = write_buff (finfo, buf, cdev->dev->map_base + offset, count); + return ret == 0 ? count : -1; +} + +static void cfi_info (struct device_d* dev) +{ + flash_info_t *info = (flash_info_t *)dev->priv; + int i; + + if (info->flash_id != FLASH_MAN_CFI) { + puts ("missing or unknown FLASH type\n"); + return; + } + + printf ("CFI conformant FLASH (%d x %d)", + (info->portwidth << 3), (info->chipwidth << 3)); + printf (" Size: %ld MB in %d Sectors\n", + info->size >> 20, info->sector_count); + printf (" "); + switch (info->vendor) { + case CFI_CMDSET_INTEL_STANDARD: + printf ("Intel Standard"); + break; + case CFI_CMDSET_INTEL_EXTENDED: + printf ("Intel Extended"); + break; + case CFI_CMDSET_AMD_STANDARD: + printf ("AMD Standard"); + break; + case CFI_CMDSET_AMD_EXTENDED: + printf ("AMD Extended"); + break; + default: + printf ("Unknown (%d)", info->vendor); + break; + } + printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X", + info->manufacturer_id, info->device_id); + if (info->device_id == 0x7E) { + printf("%04X", info->device_id2); + } + printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n", + info->erase_blk_tout, + info->write_tout); + if (info->buffer_size > 1) { + printf (" Buffer write timeout: %ld ms, buffer size: %d bytes\n", + info->buffer_write_tout, + info->buffer_size); + } + + puts ("\n Sector Start Addresses:"); + for (i = 0; i < info->sector_count; ++i) { + if ((i % 5) == 0) + printf ("\n"); +#ifdef CFG_FLASH_EMPTY_INFO + { + int k; + int size; + int erased; + volatile unsigned long *flash; + + /* + * Check if whole sector is erased + */ + if (i != (info->sector_count - 1)) + size = info->start[i + 1] - info->start[i]; + else + size = info->start[0] + info->size - info->start[i]; + erased = 1; + flash = (volatile unsigned long *) info->start[i]; + size = size >> 2; /* divide by 4 for longword access */ + for (k = 0; k < size; k++) { + if (*flash++ != 0xffffffff) { + erased = 0; + break; + } + } + + /* print empty and read-only info */ + printf (" %08lX %c %s ", + info->start[i], + erased ? 'E' : ' ', + info->protect[i] ? "RO" : " "); + } +#else /* ! CFG_FLASH_EMPTY_INFO */ + printf (" %08lX %s ", + info->start[i], + info->protect[i] ? "RO" : " "); +#endif + } + putchar('\n'); + return; +} + #if 0 -/*----------------------------------------------------------------------- +/* * flash_read_user_serial - read the OneTimeProgramming cells */ static void flash_read_user_serial (flash_info_t * info, void *buffer, int offset, @@ -660,47 +815,29 @@ static void flash_read_factory_serial (flash_info_t * info, void *buffer, int of memcpy (buffer, src + offset, len); flash_write_cmd (info, 0, 0, info->cmd_reset); } -#endif +#endif -/* - * flash_is_busy - check to see if the flash is busy - * This routine checks the status of the chip and returns true if the chip is busy - */ -static int flash_is_busy (flash_info_t * info, flash_sect_t sect) +int flash_status_check (flash_info_t * info, flash_sect_t sector, + uint64_t tout, char *prompt) { - int retval; - - switch (info->vendor) { - case CFI_CMDSET_INTEL_STANDARD: - case CFI_CMDSET_INTEL_EXTENDED: - retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE); - break; - case CFI_CMDSET_AMD_STANDARD: - case CFI_CMDSET_AMD_EXTENDED: - retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE); - break; - default: - retval = 0; - } - debug ("flash_is_busy: %d\n", retval); - return retval; + return info->cfi_cmd_set->flash_status_check(info, sector, tout, prompt); } -/*----------------------------------------------------------------------- +/* * wait for XSR.7 to be set. Time out with an error if it does not. * This routine does not set the flash to read-array mode. */ -static int flash_status_check (flash_info_t * info, flash_sect_t sector, +int flash_generic_status_check (flash_info_t * info, flash_sect_t sector, uint64_t tout, char *prompt) { uint64_t start; - tout *= 1000000; + tout *= 1000000; /* Wait for command completion */ start = get_time_ns(); - while (flash_is_busy (info, sector)) { + while (info->cfi_cmd_set->flash_is_busy (info, sector)) { if (is_timeout(start, tout)) { printf ("Flash %s timeout at address %lx data %lx\n", prompt, info->start[sector], @@ -713,96 +850,10 @@ static int flash_status_check (flash_info_t * info, flash_sect_t sector, return ERR_OK; } -/*----------------------------------------------------------------------- - * Wait for XSR.7 to be set, if it times out print an error, otherwise do a full status check. - * This routine sets the flash to read-array mode. - */ -static int flash_full_status_check (flash_info_t * info, flash_sect_t sector, - uint64_t tout, char *prompt) -{ - int retcode; - - retcode = flash_status_check (info, sector, tout, prompt); - switch (info->vendor) { - case CFI_CMDSET_INTEL_EXTENDED: - case CFI_CMDSET_INTEL_STANDARD: - if ((retcode == ERR_OK) - && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) { - retcode = ERR_INVAL; - printf ("Flash %s error at address %lx\n", prompt, - info->start[sector]); - if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS | FLASH_STATUS_PSLBS)) { - puts ("Command Sequence Error.\n"); - } else if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS)) { - puts ("Block Erase Error.\n"); - retcode = ERR_NOT_ERASED; - } else if (flash_isset (info, sector, 0, FLASH_STATUS_PSLBS)) { - puts ("Locking Error\n"); - } - if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) { - puts ("Block locked.\n"); - retcode = ERR_PROTECTED; - } - if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS)) - puts ("Vpp Low Error.\n"); - } - flash_write_cmd (info, sector, 0, info->cmd_reset); - break; - default: - break; - } - return retcode; -} - -/*----------------------------------------------------------------------- - */ -static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) -{ -#if defined(__LITTLE_ENDIAN) - unsigned short w; - unsigned int l; - unsigned long long ll; -#endif - - switch (info->portwidth) { - case FLASH_CFI_8BIT: - cword->c = c; - break; - case FLASH_CFI_16BIT: -#if defined(__LITTLE_ENDIAN) - w = c; - w <<= 8; - cword->w = (cword->w >> 8) | w; -#else - cword->w = (cword->w << 8) | c; -#endif - break; - case FLASH_CFI_32BIT: -#if defined(__LITTLE_ENDIAN) - l = c; - l <<= 24; - cword->l = (cword->l >> 8) | l; -#else - cword->l = (cword->l << 8) | c; -#endif - break; - case FLASH_CFI_64BIT: -#if defined(__LITTLE_ENDIAN) - ll = c; - ll <<= 56; - cword->ll = (cword->ll >> 8) | ll; -#else - cword->ll = (cword->ll << 8) | c; -#endif - break; - } -} - - -/*----------------------------------------------------------------------- +/* * make a proper sized command based on the port and chip widths */ -static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf) +void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf) { int i; uchar *cp = (uchar *) cmdbuf; @@ -818,70 +869,18 @@ static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf) /* * Write a proper sized command to the correct address */ -static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) +void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) { - volatile cfiptr_t addr; + uchar *addr; cfiword_t cword; - addr.cp = flash_make_addr (info, sect, offset); + addr = flash_make_addr (info, sect, offset); flash_make_cmd (info, cmd, &cword); - switch (info->portwidth) { - case FLASH_CFI_8BIT: - debug("fwc addr %p cmd %x %x 8bit x %d bit\n", addr.cp, cmd, - cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); - *addr.cp = cword.c; -#ifdef CONFIG_BLACKFIN - asm("ssync;"); -#endif - break; - case FLASH_CFI_16BIT: - debug("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr.wp, - cmd, cword.w, - info->chipwidth << CFI_FLASH_SHIFT_WIDTH); - *addr.wp = cword.w; -#ifdef CONFIG_BLACKFIN - asm("ssync;"); -#endif - break; - case FLASH_CFI_32BIT: - debug("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr.lp, - cmd, cword.l, - info->chipwidth << CFI_FLASH_SHIFT_WIDTH); - *addr.lp = cword.l; -#ifdef CONFIG_BLACKFIN - asm("ssync;"); -#endif - break; - case FLASH_CFI_64BIT: -#ifdef DEBUG - { - char str[20]; - - print_longlong (str, cword.ll); - - debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n", - addr.llp, cmd, str, - info->chipwidth << CFI_FLASH_SHIFT_WIDTH); - } -#endif - *addr.llp = cword.ll; -#ifdef CONFIG_BLACKFIN - asm("ssync;"); -#endif - break; - } + flash_write_word(info, cword, addr); } -static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect) -{ - flash_write_cmd (info, sect, AMD_ADDR_START, AMD_CMD_UNLOCK_START); - flash_write_cmd (info, sect, AMD_ADDR_ACK, AMD_CMD_UNLOCK_ACK); -} - -/*----------------------------------------------------------------------- - */ -static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) +int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) { cfiptr_t cptr; cfiword_t cword; @@ -891,20 +890,16 @@ static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, u flash_make_cmd (info, cmd, &cword); debug ("is= cmd %x(%c) addr %p ", cmd, cmd, cptr.cp); - switch (info->portwidth) { - case FLASH_CFI_8BIT: + if (bankwidth_is_1(info)) { debug ("is= %x %x\n", cptr.cp[0], cword.c); retval = (cptr.cp[0] == cword.c); - break; - case FLASH_CFI_16BIT: + } else if (bankwidth_is_2(info)) { debug ("is= %4.4x %4.4x\n", cptr.wp[0], cword.w); retval = (cptr.wp[0] == cword.w); - break; - case FLASH_CFI_32BIT: + } else if (bankwidth_is_4(info)) { debug ("is= %8.8lx %8.8lx\n", cptr.lp[0], cword.l); retval = (cptr.lp[0] == cword.l); - break; - case FLASH_CFI_64BIT: + } else if (bankwidth_is_8(info)) { #ifdef DEBUG { char str1[20]; @@ -916,17 +911,13 @@ static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, u } #endif retval = (cptr.llp[0] == cword.ll); - break; - default: + } else retval = 0; - break; - } + return retval; } -/*----------------------------------------------------------------------- - */ -static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) +int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) { cfiptr_t cptr; cfiword_t cword; @@ -934,515 +925,20 @@ static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uch cptr.cp = flash_make_addr (info, sect, offset); flash_make_cmd (info, cmd, &cword); - switch (info->portwidth) { - case FLASH_CFI_8BIT: + if (bankwidth_is_1(info)) { retval = ((cptr.cp[0] & cword.c) == cword.c); - break; - case FLASH_CFI_16BIT: + } else if (bankwidth_is_2(info)) { retval = ((cptr.wp[0] & cword.w) == cword.w); - break; - case FLASH_CFI_32BIT: + } else if (bankwidth_is_4(info)) { retval = ((cptr.lp[0] & cword.l) == cword.l); - break; - case FLASH_CFI_64BIT: + } else if (bankwidth_is_8(info)) { retval = ((cptr.llp[0] & cword.ll) == cword.ll); - break; - default: + } else retval = 0; - break; - } - return retval; -} - -/*----------------------------------------------------------------------- - */ -static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) -{ - cfiptr_t cptr; - cfiword_t cword; - int retval; - cptr.cp = flash_make_addr (info, sect, offset); - flash_make_cmd (info, cmd, &cword); - switch (info->portwidth) { - case FLASH_CFI_8BIT: - retval = ((cptr.cp[0] & cword.c) != (cptr.cp[0] & cword.c)); - break; - case FLASH_CFI_16BIT: - retval = ((cptr.wp[0] & cword.w) != (cptr.wp[0] & cword.w)); - break; - case FLASH_CFI_32BIT: - retval = ((cptr.lp[0] & cword.l) != (cptr.lp[0] & cword.l)); - break; - case FLASH_CFI_64BIT: - retval = ((cptr.llp[0] & cword.ll) != - (cptr.llp[0] & cword.ll)); - break; - default: - retval = 0; - break; - } return retval; } -/*----------------------------------------------------------------------- - * read jedec ids from device and set corresponding fields in info struct - * - * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct - * -*/ -static void flash_read_jedec_ids (flash_info_t * info) -{ - info->manufacturer_id = 0; - info->device_id = 0; - info->device_id2 = 0; - - switch (info->vendor) { - case CFI_CMDSET_INTEL_STANDARD: - case CFI_CMDSET_INTEL_EXTENDED: - flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); - flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID); - udelay(1000); /* some flash are slow to respond */ - info->manufacturer_id = flash_read_uchar (info, - FLASH_OFFSET_MANUFACTURER_ID); - info->device_id = flash_read_uchar (info, - FLASH_OFFSET_DEVICE_ID); - flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); - break; - case CFI_CMDSET_AMD_STANDARD: - case CFI_CMDSET_AMD_EXTENDED: - flash_write_cmd(info, 0, 0, AMD_CMD_RESET); - flash_unlock_seq(info, 0); - flash_write_cmd(info, 0, AMD_ADDR_START, FLASH_CMD_READ_ID); - udelay(1000); /* some flash are slow to respond */ - info->manufacturer_id = flash_read_uchar (info, - FLASH_OFFSET_MANUFACTURER_ID); - info->device_id = flash_read_uchar (info, - FLASH_OFFSET_DEVICE_ID); - if (info->device_id == 0x7E) { - /* AMD 3-byte (expanded) device ids */ - info->device_id2 = flash_read_uchar (info, - FLASH_OFFSET_DEVICE_ID2); - info->device_id2 <<= 8; - info->device_id2 |= flash_read_uchar (info, - FLASH_OFFSET_DEVICE_ID3); - } - flash_write_cmd(info, 0, 0, AMD_CMD_RESET); - break; - default: - break; - } -} - -/*----------------------------------------------------------------------- - * detect if flash is compatible with the Common Flash Interface (CFI) - * http://www.jedec.org/download/search/jesd68.pdf - * -*/ -static int flash_detect_cfi (flash_info_t * info) -{ - int cfi_offset; - debug ("flash detect cfi\n"); - - for (info->portwidth = CFG_FLASH_CFI_WIDTH; - info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) { - for (info->chipwidth = FLASH_CFI_BY8; - info->chipwidth <= info->portwidth; - info->chipwidth <<= 1) { - flash_write_cmd (info, 0, 0, info->cmd_reset); - for (cfi_offset=0; cfi_offset < sizeof(flash_offset_cfi)/sizeof(uint); cfi_offset++) { - flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset], FLASH_CMD_CFI); - if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q') - && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') - && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) { - info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE); - info->cfi_offset=flash_offset_cfi[cfi_offset]; - debug ("device interface is %d\n", - info->interface); - debug ("found port %d chip %d ", - info->portwidth, info->chipwidth); - debug ("port %d bits chip %d bits\n", - info->portwidth << CFI_FLASH_SHIFT_WIDTH, - info->chipwidth << CFI_FLASH_SHIFT_WIDTH); - return 1; - } - } - } - } - debug ("not found\n"); - return 0; -} - -/* - * The following code cannot be run from FLASH! - * - */ -static ulong flash_get_size (flash_info_t *info, ulong base) -{ - int i, j; - flash_sect_t sect_cnt; - unsigned long sector; - unsigned long tmp; - int size_ratio; - uchar num_erase_regions; - int erase_region_size; - int erase_region_count; - int geometry_reversed = 0; - - info->ext_addr = 0; - info->cfi_version = 0; - info->legacy_unlock = 0; - - /* first only malloc space for the first sector */ - info->start = malloc(sizeof(ulong)); - - info->start[0] = base; - info->protect = 0; - - if (flash_detect_cfi (info)) { - info->vendor = flash_read_ushort (info, 0, - FLASH_OFFSET_PRIMARY_VENDOR); - flash_read_jedec_ids (info); - flash_write_cmd (info, 0, info->cfi_offset, FLASH_CMD_CFI); - num_erase_regions = flash_read_uchar (info, - FLASH_OFFSET_NUM_ERASE_REGIONS); - info->ext_addr = flash_read_ushort (info, 0, - FLASH_OFFSET_EXT_QUERY_T_P_ADDR); - if (info->ext_addr) { - info->cfi_version = (ushort) flash_read_uchar (info, - info->ext_addr + 3) << 8; - info->cfi_version |= (ushort) flash_read_uchar (info, - info->ext_addr + 4); - } -#ifdef DEBUG - flash_printqry (info, 0); -#endif - switch (info->vendor) { - case CFI_CMDSET_INTEL_STANDARD: - case CFI_CMDSET_INTEL_EXTENDED: - default: - info->cmd_reset = FLASH_CMD_RESET; - /* read legacy lock/unlock bit from intel flash */ - if (info->ext_addr) { - info->legacy_unlock = flash_read_uchar (info, - info->ext_addr + 5) & 0x08; - } - break; - case CFI_CMDSET_AMD_STANDARD: - case CFI_CMDSET_AMD_EXTENDED: - info->cmd_reset = AMD_CMD_RESET; - /* check if flash geometry needs reversal */ - if (num_erase_regions <= 1) - break; - /* reverse geometry if top boot part */ - if (info->cfi_version < 0x3131) { - /* CFI < 1.1, try to guess from device id */ - if ((info->device_id & 0x80) != 0) { - geometry_reversed = 1; - } - break; - } - /* CFI >= 1.1, deduct from top/bottom flag */ - /* note: ext_addr is valid since cfi_version > 0 */ - if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) { - geometry_reversed = 1; - } - break; - } - - debug ("manufacturer is %d\n", info->vendor); - debug ("manufacturer id is 0x%x\n", info->manufacturer_id); - debug ("device id is 0x%x\n", info->device_id); - debug ("device id2 is 0x%x\n", info->device_id2); - debug ("cfi version is 0x%04x\n", info->cfi_version); - - size_ratio = info->portwidth / info->chipwidth; - /* if the chip is x8/x16 reduce the ratio by half */ - if ((info->interface == FLASH_CFI_X8X16) - && (info->chipwidth == FLASH_CFI_BY8)) { - size_ratio >>= 1; - } - debug ("size_ratio %d port %d bits chip %d bits\n", - size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH, - info->chipwidth << CFI_FLASH_SHIFT_WIDTH); - debug ("found %d erase regions\n", num_erase_regions); - sect_cnt = 0; - sector = base; - - for (i = 0; i < num_erase_regions; i++) { - if (i > NUM_ERASE_REGIONS) { - printf ("%d erase regions found, only %d used\n", - num_erase_regions, NUM_ERASE_REGIONS); - break; - } - if (geometry_reversed) - tmp = flash_read_long (info, 0, - FLASH_OFFSET_ERASE_REGIONS + - (num_erase_regions - 1 - i) * 4); - else - tmp = flash_read_long (info, 0, - FLASH_OFFSET_ERASE_REGIONS + - i * 4); - erase_region_size = - (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128; - tmp >>= 16; - erase_region_count = (tmp & 0xffff) + 1; - debug ("erase_region_count = %d erase_region_size = %d\n", - erase_region_count, erase_region_size); - - /* increase the space malloced for the sector start addresses */ - info->start = realloc(info->start, sizeof(ulong) * (erase_region_count + sect_cnt)); - info->protect = realloc(info->protect, sizeof(ulong) * (erase_region_count + sect_cnt)); - - for (j = 0; j < erase_region_count; j++) { - info->start[sect_cnt] = sector; - sector += (erase_region_size * size_ratio); - - /* - * Only read protection status from supported devices (intel...) - */ - switch (info->vendor) { - case CFI_CMDSET_INTEL_EXTENDED: - case CFI_CMDSET_INTEL_STANDARD: - info->protect[sect_cnt] = - flash_isset (info, sect_cnt, - FLASH_OFFSET_PROTECT, - FLASH_STATUS_PROTECT); - break; - default: - info->protect[sect_cnt] = 0; /* default: not protected */ - } - - sect_cnt++; - } - } - - info->sector_count = sect_cnt; - /* multiply the size by the number of chips */ - info->size = (1 << flash_read_uchar (info, FLASH_OFFSET_SIZE)) * size_ratio; - info->buffer_size = (1 << flash_read_ushort (info, 0, FLASH_OFFSET_BUFFER_SIZE)); - tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_ETOUT); - info->erase_blk_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT))); - tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT)) * - (1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT)); - info->buffer_write_tout = tmp * 1000; - tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT)) * - (1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT)); - info->write_tout = tmp * 1000; - info->flash_id = FLASH_MAN_CFI; - if ((info->interface == FLASH_CFI_X8X16) && (info->chipwidth == FLASH_CFI_BY8)) { - info->portwidth >>= 1; /* XXX - Need to test on x8/x16 in parallel. */ - } - } - - flash_write_cmd (info, 0, 0, info->cmd_reset); - return (info->size); -} - -/* loop through the sectors from the highest address - * when the passed address is greater or equal to the sector address - * we have a match - */ -static flash_sect_t find_sector (flash_info_t * info, ulong addr) -{ - flash_sect_t sector; - - for (sector = info->sector_count - 1; sector >= 0; sector--) { - if (addr >= info->start[sector]) - break; - } - return sector; -} - -/*----------------------------------------------------------------------- - */ -static int flash_write_cfiword (flash_info_t * info, ulong dest, - cfiword_t cword) -{ - cfiptr_t ctladdr; - cfiptr_t cptr; - int flag; - - ctladdr.cp = flash_make_addr (info, 0, 0); - cptr.cp = (uchar *) dest; - - - /* Check if Flash is (sufficiently) erased */ - switch (info->portwidth) { - case FLASH_CFI_8BIT: - flag = ((cptr.cp[0] & cword.c) == cword.c); - break; - case FLASH_CFI_16BIT: - flag = ((cptr.wp[0] & cword.w) == cword.w); - break; - case FLASH_CFI_32BIT: - flag = ((cptr.lp[0] & cword.l) == cword.l); - break; - case FLASH_CFI_64BIT: - flag = ((cptr.llp[0] & cword.ll) == cword.ll); - break; - default: - return 2; - } - if (!flag) - return 2; - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts (); - - switch (info->vendor) { - case CFI_CMDSET_INTEL_EXTENDED: - case CFI_CMDSET_INTEL_STANDARD: - flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS); - flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE); - break; - case CFI_CMDSET_AMD_EXTENDED: - case CFI_CMDSET_AMD_STANDARD: - flash_unlock_seq (info, 0); - flash_write_cmd (info, 0, AMD_ADDR_START, AMD_CMD_WRITE); - break; - } - - switch (info->portwidth) { - case FLASH_CFI_8BIT: - cptr.cp[0] = cword.c; - break; - case FLASH_CFI_16BIT: - cptr.wp[0] = cword.w; - break; - case FLASH_CFI_32BIT: - cptr.lp[0] = cword.l; - break; - case FLASH_CFI_64BIT: - cptr.llp[0] = cword.ll; - break; - } - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts (); - - return flash_full_status_check (info, find_sector (info, dest), - info->write_tout, "write"); -} - -#ifdef CONFIG_CFI_BUFFER_WRITE - -static int flash_write_cfibuffer (flash_info_t * info, ulong dest, const uchar * cp, - int len) -{ - flash_sect_t sector; - int cnt; - int retcode; - volatile cfiptr_t src; - volatile cfiptr_t dst; - - /* reduce width due to possible alignment problems */ - const unsigned long ptr = (unsigned long)dest | (unsigned long)cp | info->portwidth; - const int width = ptr & -ptr; - - switch (info->vendor) { - case CFI_CMDSET_INTEL_STANDARD: - case CFI_CMDSET_INTEL_EXTENDED: - src.cp = (uchar *)cp; - dst.cp = (uchar *) dest; - sector = find_sector (info, dest); - flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS); - flash_write_cmd (info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER); - if ((retcode = flash_status_check (info, sector, info->buffer_write_tout, - "write to buffer")) == ERR_OK) { - /* reduce the number of loops by the width of the port */ - switch (width) { - case FLASH_CFI_8BIT: - cnt = len; - break; - case FLASH_CFI_16BIT: - cnt = len >> 1; - break; - case FLASH_CFI_32BIT: - cnt = len >> 2; - break; - case FLASH_CFI_64BIT: - cnt = len >> 3; - break; - default: - return ERR_INVAL; - break; - } - flash_write_cmd (info, sector, 0, (uchar) cnt - 1); - while (cnt-- > 0) { - switch (width) { - case FLASH_CFI_8BIT: - *dst.cp++ = *src.cp++; - break; - case FLASH_CFI_16BIT: - *dst.wp++ = *src.wp++; - break; - case FLASH_CFI_32BIT: - *dst.lp++ = *src.lp++; - break; - case FLASH_CFI_64BIT: - *dst.llp++ = *src.llp++; - break; - default: - return ERR_INVAL; - break; - } - } - flash_write_cmd (info, sector, 0, - FLASH_CMD_WRITE_BUFFER_CONFIRM); - retcode = flash_full_status_check (info, sector, - info->buffer_write_tout, - "buffer write"); - } - return retcode; - - case CFI_CMDSET_AMD_STANDARD: - case CFI_CMDSET_AMD_EXTENDED: - src.cp = (uchar *)cp; - dst.cp = (uchar *) dest; - sector = find_sector (info, dest); - - flash_unlock_seq(info,0); - flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_TO_BUFFER); - - switch (width) { - case FLASH_CFI_8BIT: - cnt = len; - flash_write_cmd (info, sector, 0, (uchar) cnt - 1); - while (cnt-- > 0) *dst.cp++ = *src.cp++; - break; - case FLASH_CFI_16BIT: - cnt = len >> 1; - flash_write_cmd (info, sector, 0, (uchar) cnt - 1); - while (cnt-- > 0) *dst.wp++ = *src.wp++; - break; - case FLASH_CFI_32BIT: - cnt = len >> 2; - flash_write_cmd (info, sector, 0, (uchar) cnt - 1); - while (cnt-- > 0) *dst.lp++ = *src.lp++; - break; - case FLASH_CFI_64BIT: - cnt = len >> 3; - flash_write_cmd (info, sector, 0, (uchar) cnt - 1); - while (cnt-- > 0) *dst.llp++ = *src.llp++; - break; - default: - return ERR_INVAL; - } - - flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM); - retcode = flash_full_status_check (info, sector, info->buffer_write_tout, - "buffer write"); - return retcode; - - default: - debug ("Unknown Command Set\n"); - return ERR_INVAL; - } -} -#endif /* CONFIG_CFI_BUFFER_WRITE */ - struct file_operations cfi_ops = { .read = mem_read, .write = cfi_write, @@ -1464,6 +960,12 @@ static int cfi_probe (struct device_d *dev) /* Init: no FLASHes known */ info->flash_id = FLASH_UNKNOWN; size += info->size = flash_get_size(info, dev->map_base); + + if (dev->size == 0) { + printf("cfi_probe: size : 0x%08x\n", info->size); + dev->size = info->size; + } + if (info->flash_id == FLASH_UNKNOWN) { printf ("## Unknown FLASH on Bank at 0x%08x - Size = 0x%08lx = %ld MB\n", dev->map_base, info->size, info->size << 20); @@ -1481,34 +983,15 @@ static int cfi_probe (struct device_d *dev) } static struct driver_d cfi_driver = { - .name = "cfi_flash", - .probe = cfi_probe, - .info = cfi_info, + .name = "cfi_flash", + .probe = cfi_probe, + .info = cfi_info, }; static int cfi_init(void) { - return register_driver(&cfi_driver); + return register_driver(&cfi_driver); } device_initcall(cfi_init); -/** - * @file - * @brief This file implements a Common Flash Interface (CFI) driver for barebox. - * - * This file implements a Common Flash Interface (CFI) driver for barebox. - * The width of the port and the width of the chips are determined at initialization. - * These widths are used to calculate the address for access CFI data structures. - * - * References - * - * - JEDEC Standard JESD68 - Common Flash Interface (CFI) - * - JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes - * - Intel Application Note 646 Common Flash Interface (CFI) and Command Sets - * - Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet - * - AMD CFI Specification, Release 2.0 December 1, 2001 - * - AMD/Spansion Application Note: Migration from Single-byte to Three-byte - * Device IDs, Publication Number 25538 Revision A, November 8, 2001 - * - */ diff --git a/drivers/nor/cfi_flash_amd.c b/drivers/nor/cfi_flash_amd.c index 44eb881433..403405e8cc 100644 --- a/drivers/nor/cfi_flash_amd.c +++ b/drivers/nor/cfi_flash_amd.c @@ -1,6 +1,6 @@ #include <common.h> #include <stdio.h> -#include <cfi_flash_new.h> +#include <cfi_flash.h> static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect) { diff --git a/drivers/nor/cfi_flash_intel.c b/drivers/nor/cfi_flash_intel.c index c2d92e71a6..98e0ee54c7 100644 --- a/drivers/nor/cfi_flash_intel.c +++ b/drivers/nor/cfi_flash_intel.c @@ -1,5 +1,5 @@ #include <common.h> -#include <cfi_flash_new.h> +#include <cfi_flash.h> /* * read jedec ids from device and set corresponding fields in info struct diff --git a/drivers/nor/cfi_flash_new.c b/drivers/nor/cfi_flash_new.c deleted file mode 100644 index 88432c8507..0000000000 --- a/drivers/nor/cfi_flash_new.c +++ /dev/null @@ -1,997 +0,0 @@ -/* - * (C) Copyright 2002-2004 - * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com - * - * Copyright (C) 2003 Arabella Software Ltd. - * Yuli Barcohen <yuli@arabellasw.com> - * - * Copyright (C) 2004 - * Ed Okerson - * - * Copyright (C) 2006 - * Tolunay Orkun <listmember@orkun.us> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - * - */ - -/* The DEBUG define must be before common to enable debugging */ -/* #define DEBUG */ - -#include <common.h> -#include <asm/byteorder.h> -#include <environment.h> -#include <clock.h> -#include <init.h> -#include <malloc.h> -#include <cfi_flash_new.h> -#include <asm/io.h> -#include <errno.h> - -/* - * This file implements a Common Flash Interface (CFI) driver for barebox. - * The width of the port and the width of the chips are determined at initialization. - * These widths are used to calculate the address for access CFI data structures. - * - * References - * JEDEC Standard JESD68 - Common Flash Interface (CFI) - * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes - * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets - * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet - * AMD CFI Specification, Release 2.0 December 1, 2001 - * AMD/Spansion Application Note: Migration from Single-byte to Three-byte - * Device IDs, Publication Number 25538 Revision A, November 8, 2001 - * - */ - -#define NUM_ERASE_REGIONS 4 /* max. number of erase regions */ - -static uint flash_offset_cfi[2]={FLASH_OFFSET_CFI,FLASH_OFFSET_CFI_ALT}; - -/* - * Check if chip width is defined. If not, start detecting with 8bit. - */ -#ifndef CFG_FLASH_CFI_WIDTH -#define CFG_FLASH_CFI_WIDTH FLASH_CFI_8BIT -#endif - - -/* - * Functions - */ - -static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c) -{ -#if defined(__LITTLE_ENDIAN) - unsigned short w; - unsigned int l; - unsigned long long ll; -#endif - - if (bankwidth_is_1(info)) { - cword->c = c; - } else if (bankwidth_is_2(info)) { -#if defined(__LITTLE_ENDIAN) - w = c; - w <<= 8; - cword->w = (cword->w >> 8) | w; -#else - cword->w = (cword->w << 8) | c; -#endif - } else if (bankwidth_is_4(info)) { -#if defined(__LITTLE_ENDIAN) - l = c; - l <<= 24; - cword->l = (cword->l >> 8) | l; -#else - cword->l = (cword->l << 8) | c; -#endif - } else if (bankwidth_is_8(info)) { -#if defined(__LITTLE_ENDIAN) - ll = c; - ll <<= 56; - cword->ll = (cword->ll >> 8) | ll; -#else - cword->ll = (cword->ll << 8) | c; -#endif - } -} - -static int flash_write_cfiword (flash_info_t * info, ulong dest, - cfiword_t cword) -{ - cfiptr_t ctladdr; - cfiptr_t cptr; - int flag; - - ctladdr.cp = flash_make_addr (info, 0, 0); - cptr.cp = (uchar *) dest; - - /* Check if Flash is (sufficiently) erased */ - if (bankwidth_is_1(info)) { - flag = ((cptr.cp[0] & cword.c) == cword.c); - } else if (bankwidth_is_2(info)) { - flag = ((cptr.wp[0] & cword.w) == cword.w); - } else if (bankwidth_is_4(info)) { - flag = ((cptr.lp[0] & cword.l) == cword.l); - } else if (bankwidth_is_8(info)) { - flag = ((cptr.llp[0] & cword.ll) == cword.ll); - } else - return 2; - - if (!flag) - return 2; - - /* Disable interrupts which might cause a timeout here */ -// flag = disable_interrupts (); - - info->cfi_cmd_set->flash_prepare_write(info); - - if (bankwidth_is_1(info)) { - cptr.cp[0] = cword.c; - } else if (bankwidth_is_2(info)) { - cptr.wp[0] = cword.w; - } else if (bankwidth_is_4(info)) { - cptr.lp[0] = cword.l; - } else if (bankwidth_is_8(info)) { - cptr.llp[0] = cword.ll; - } - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts (); - - return flash_status_check (info, find_sector (info, dest), - info->write_tout, "write"); -} - -#ifdef DEBUG -/* - * Debug support - */ -void print_longlong (char *str, unsigned long long data) -{ - int i; - char *cp; - - cp = (unsigned char *) &data; - for (i = 0; i < 8; i++) - sprintf (&str[i * 2], "%2.2x", *cp++); -} - -static void flash_printqry (flash_info_t * info, flash_sect_t sect) -{ - cfiptr_t cptr; - int x, y; - - for (x = 0; x < 0x40; x += 16U / info->portwidth) { - cptr.cp = - flash_make_addr (info, sect, - x + FLASH_OFFSET_CFI_RESP); - debug ("%p : ", cptr.cp); - for (y = 0; y < 16; y++) { - debug ("%2.2x ", cptr.cp[y]); - } - debug (" "); - for (y = 0; y < 16; y++) { - if (cptr.cp[y] >= 0x20 && cptr.cp[y] <= 0x7e) { - debug ("%c", cptr.cp[y]); - } else { - debug ("."); - } - } - debug ("\n"); - } -} -#endif - -/* - * read a short word by swapping for ppc format. - */ -static ushort flash_read_ushort (flash_info_t * info, flash_sect_t sect, uint offset) -{ - uchar *addr; - ushort retval; - -#ifdef DEBUG - int x; -#endif - addr = flash_make_addr (info, sect, offset); - -#ifdef DEBUG - debug ("ushort addr is at %p info->portwidth = %d\n", addr, - info->portwidth); - for (x = 0; x < 2 * info->portwidth; x++) { - debug ("addr[%x] = 0x%x\n", x, addr[x]); - } -#endif -#if defined(__LITTLE_ENDIAN) - retval = ((addr[(info->portwidth)] << 8) | addr[0]); -#else - retval = ((addr[(2 * info->portwidth) - 1] << 8) | - addr[info->portwidth - 1]); -#endif - - debug ("retval = 0x%x\n", retval); - return retval; -} - -/* - * read a long word by picking the least significant byte of each maximum - * port size word. Swap for ppc format. - */ -static ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offset) -{ - uchar *addr; - ulong retval; - -#ifdef DEBUG - int x; -#endif - addr = flash_make_addr (info, sect, offset); - -#ifdef DEBUG - debug ("long addr is at %p info->portwidth = %d\n", addr, - info->portwidth); - for (x = 0; x < 4 * info->portwidth; x++) { - debug ("addr[%x] = 0x%x\n", x, addr[x]); - } -#endif -#if defined(__LITTLE_ENDIAN) - retval = (addr[0] << 16) | (addr[(info->portwidth)] << 24) | - (addr[(2 * info->portwidth)]) | (addr[(3 * info->portwidth)] << 8); -#else - retval = (addr[(2 * info->portwidth) - 1] << 24) | - (addr[(info->portwidth) - 1] << 16) | - (addr[(4 * info->portwidth) - 1] << 8) | - addr[(3 * info->portwidth) - 1]; -#endif - return retval; -} - -/* - * detect if flash is compatible with the Common Flash Interface (CFI) - * http://www.jedec.org/download/search/jesd68.pdf - * -*/ -static int flash_detect_cfi (flash_info_t * info) -{ - int cfi_offset; - debug ("flash detect cfi\n"); - - for (info->portwidth = CFG_FLASH_CFI_WIDTH; - info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) { - for (info->chipwidth = FLASH_CFI_BY8; - info->chipwidth <= info->portwidth; - info->chipwidth <<= 1) { - flash_write_cmd (info, 0, 0, info->cmd_reset); - for (cfi_offset=0; cfi_offset < sizeof(flash_offset_cfi)/sizeof(uint); cfi_offset++) { - flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset], FLASH_CMD_CFI); - if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q') - && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') - && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) { - info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE); - info->cfi_offset=flash_offset_cfi[cfi_offset]; - debug ("device interface is %d\n", - info->interface); - debug ("found port %d chip %d ", - info->portwidth, info->chipwidth); - debug ("port %d bits chip %d bits\n", - info->portwidth << CFI_FLASH_SHIFT_WIDTH, - info->chipwidth << CFI_FLASH_SHIFT_WIDTH); - return 1; - } - } - } - } - debug ("not found\n"); - return 0; -} - -/* - * The following code cannot be run from FLASH! - */ -static ulong flash_get_size (flash_info_t *info, ulong base) -{ - int i, j; - flash_sect_t sect_cnt; - unsigned long sector; - unsigned long tmp; - int size_ratio; - uchar num_erase_regions; - int erase_region_size; - int erase_region_count; - int geometry_reversed = 0; - - info->ext_addr = 0; - info->cfi_version = 0; -#ifdef CFG_FLASH_PROTECTION - info->legacy_unlock = 0; -#endif - - /* first only malloc space for the first sector */ - info->start = malloc(sizeof(ulong)); - - info->start[0] = base; - info->protect = 0; - - if (flash_detect_cfi (info)) { - info->vendor = flash_read_ushort (info, 0, - FLASH_OFFSET_PRIMARY_VENDOR); - switch (info->vendor) { -#ifdef CONFIG_DRIVER_CFI_INTEL - case CFI_CMDSET_INTEL_EXTENDED: - case CFI_CMDSET_INTEL_STANDARD: - info->cfi_cmd_set = &cfi_cmd_set_intel; - break; -#endif -#ifdef CONFIG_DRIVER_CFI_AMD - case CFI_CMDSET_AMD_STANDARD: - case CFI_CMDSET_AMD_EXTENDED: - info->cfi_cmd_set = &cfi_cmd_set_amd; - break; -#endif - default: - printf("unsupported vendor\n"); - return 0; - } - info->cfi_cmd_set->flash_read_jedec_ids (info); - flash_write_cmd (info, 0, info->cfi_offset, FLASH_CMD_CFI); - num_erase_regions = flash_read_uchar (info, - FLASH_OFFSET_NUM_ERASE_REGIONS); - info->ext_addr = flash_read_ushort (info, 0, - FLASH_OFFSET_EXT_QUERY_T_P_ADDR); - if (info->ext_addr) { - info->cfi_version = (ushort) flash_read_uchar (info, - info->ext_addr + 3) << 8; - info->cfi_version |= (ushort) flash_read_uchar (info, - info->ext_addr + 4); - } -#ifdef DEBUG - flash_printqry (info, 0); -#endif - switch (info->vendor) { - case CFI_CMDSET_INTEL_STANDARD: - case CFI_CMDSET_INTEL_EXTENDED: - default: - info->cmd_reset = FLASH_CMD_RESET; -#ifdef CFG_FLASH_PROTECTION - /* read legacy lock/unlock bit from intel flash */ - if (info->ext_addr) { - info->legacy_unlock = flash_read_uchar (info, - info->ext_addr + 5) & 0x08; - } -#endif - break; - case CFI_CMDSET_AMD_STANDARD: - case CFI_CMDSET_AMD_EXTENDED: - info->cmd_reset = AMD_CMD_RESET; - /* check if flash geometry needs reversal */ - if (num_erase_regions <= 1) - break; - /* reverse geometry if top boot part */ - if (info->cfi_version < 0x3131) { - /* CFI < 1.1, try to guess from device id */ - if ((info->device_id & 0x80) != 0) { - geometry_reversed = 1; - } - break; - } - /* CFI >= 1.1, deduct from top/bottom flag */ - /* note: ext_addr is valid since cfi_version > 0 */ - if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) { - geometry_reversed = 1; - } - break; - } - - debug ("manufacturer is %d\n", info->vendor); - debug ("manufacturer id is 0x%x\n", info->manufacturer_id); - debug ("device id is 0x%x\n", info->device_id); - debug ("device id2 is 0x%x\n", info->device_id2); - debug ("cfi version is 0x%04x\n", info->cfi_version); - - size_ratio = info->portwidth / info->chipwidth; - /* if the chip is x8/x16 reduce the ratio by half */ - if ((info->interface == FLASH_CFI_X8X16) - && (info->chipwidth == FLASH_CFI_BY8)) { - size_ratio >>= 1; - } - debug ("size_ratio %d port %d bits chip %d bits\n", - size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH, - info->chipwidth << CFI_FLASH_SHIFT_WIDTH); - debug ("found %d erase regions\n", num_erase_regions); - sect_cnt = 0; - sector = base; - - for (i = 0; i < num_erase_regions; i++) { - if (i > NUM_ERASE_REGIONS) { - printf ("%d erase regions found, only %d used\n", - num_erase_regions, NUM_ERASE_REGIONS); - break; - } - if (geometry_reversed) - tmp = flash_read_long (info, 0, - FLASH_OFFSET_ERASE_REGIONS + - (num_erase_regions - 1 - i) * 4); - else - tmp = flash_read_long (info, 0, - FLASH_OFFSET_ERASE_REGIONS + - i * 4); - erase_region_size = - (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128; - tmp >>= 16; - erase_region_count = (tmp & 0xffff) + 1; - debug ("erase_region_count = %d erase_region_size = %d\n", - erase_region_count, erase_region_size); - - /* increase the space malloced for the sector start addresses */ - info->start = realloc(info->start, sizeof(ulong) * (erase_region_count + sect_cnt)); - info->protect = realloc(info->protect, sizeof(uchar) * (erase_region_count + sect_cnt)); - - for (j = 0; j < erase_region_count; j++) { - info->start[sect_cnt] = sector; - sector += (erase_region_size * size_ratio); - - /* - * Only read protection status from supported devices (intel...) - */ - switch (info->vendor) { - case CFI_CMDSET_INTEL_EXTENDED: - case CFI_CMDSET_INTEL_STANDARD: - info->protect[sect_cnt] = - flash_isset (info, sect_cnt, - FLASH_OFFSET_PROTECT, - FLASH_STATUS_PROTECT); - break; - default: - info->protect[sect_cnt] = 0; /* default: not protected */ - } - - sect_cnt++; - } - } - - info->sector_count = sect_cnt; - /* multiply the size by the number of chips */ - info->size = (1 << flash_read_uchar (info, FLASH_OFFSET_SIZE)) * size_ratio; - info->buffer_size = (1 << flash_read_ushort (info, 0, FLASH_OFFSET_BUFFER_SIZE)); - tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_ETOUT); - info->erase_blk_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT))); - tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT)) * - (1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT)); - info->buffer_write_tout = tmp * 1000; - tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT)) * - (1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT)); - info->write_tout = tmp * 1000; - info->flash_id = FLASH_MAN_CFI; - if ((info->interface == FLASH_CFI_X8X16) && (info->chipwidth == FLASH_CFI_BY8)) { - info->portwidth >>= 1; /* XXX - Need to test on x8/x16 in parallel. */ - } - } - - flash_write_cmd (info, 0, 0, info->cmd_reset); - return info->size; -} - -/* loop through the sectors from the highest address - * when the passed address is greater or equal to the sector address - * we have a match - */ -flash_sect_t find_sector (flash_info_t * info, ulong addr) -{ - flash_sect_t sector; - - for (sector = info->sector_count - 1; sector >= 0; sector--) { - if (addr >= info->start[sector]) - break; - } - return sector; -} - -static int cfi_erase(struct cdev *cdev, size_t count, unsigned long offset) -{ - flash_info_t *finfo = (flash_info_t *)cdev->priv; - unsigned long start, end; - int i, ret = 0; - - printf("%s: erase 0x%08x (size %d)\n", __FUNCTION__, offset, count); - - start = find_sector(finfo, cdev->dev->map_base + offset); - end = find_sector(finfo, cdev->dev->map_base + offset + count - 1); - - for (i = start; i <= end; i++) { - ret = finfo->cfi_cmd_set->flash_erase_one(finfo, i); - if (ret) - goto out; - printf("."); - } -out: - putchar('\n'); - return ret; -} - -/* - * Copy memory to flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -static int write_buff (flash_info_t * info, const uchar * src, ulong addr, ulong cnt) -{ - ulong wp; - ulong cp; - int aln; - cfiword_t cword; - int i, rc; - -#ifdef CONFIG_CFI_BUFFER_WRITE - int buffered_size; -#endif - /* get lower aligned address */ - /* get lower aligned address */ - wp = (addr & ~(info->portwidth - 1)); - - /* handle unaligned start */ - if ((aln = addr - wp) != 0) { - cword.l = 0; - cp = wp; - for (i = 0; i < aln; ++i, ++cp) - flash_add_byte (info, &cword, (*(uchar *) cp)); - - for (; (i < info->portwidth) && (cnt > 0); i++) { - flash_add_byte (info, &cword, *src++); - cnt--; - cp++; - } - for (; (cnt == 0) && (i < info->portwidth); ++i, ++cp) - flash_add_byte (info, &cword, (*(uchar *) cp)); - - rc = flash_write_cfiword (info, wp, cword); - if (rc) - return rc; - wp = cp; - } - - /* handle the aligned part */ -#ifdef CONFIG_CFI_BUFFER_WRITE - buffered_size = (info->portwidth / info->chipwidth); - buffered_size *= info->buffer_size; - while (cnt >= info->portwidth) { - /* prohibit buffer write when buffer_size is 1 */ - if (info->buffer_size == 1) { - cword.l = 0; - for (i = 0; i < info->portwidth; i++) - flash_add_byte (info, &cword, *src++); - if ((rc = flash_write_cfiword (info, wp, cword)) != 0) - return rc; - wp += info->portwidth; - cnt -= info->portwidth; - continue; - } - - /* write buffer until next buffered_size aligned boundary */ - i = buffered_size - (wp % buffered_size); - if (i > cnt) - i = cnt; - if ((rc = info->cfi_cmd_set->flash_write_cfibuffer (info, wp, src, i)) != ERR_OK) - return rc; - i -= i & (info->portwidth - 1); - wp += i; - src += i; - cnt -= i; - } -#else - while (cnt >= info->portwidth) { - cword.l = 0; - for (i = 0; i < info->portwidth; i++) { - flash_add_byte (info, &cword, *src++); - } - if ((rc = flash_write_cfiword (info, wp, cword)) != 0) - return rc; - wp += info->portwidth; - cnt -= info->portwidth; - } -#endif /* CONFIG_CFI_BUFFER_WRITE */ - if (cnt == 0) { - return 0; - } - - /* - * handle unaligned tail bytes - */ - cword.l = 0; - for (i = 0, cp = wp; (i < info->portwidth) && (cnt > 0); ++i, ++cp) { - flash_add_byte (info, &cword, *src++); - --cnt; - } - for (; i < info->portwidth; ++i, ++cp) { - flash_add_byte (info, &cword, (*(uchar *) cp)); - } - - return flash_write_cfiword (info, wp, cword); -} - -static int flash_real_protect (flash_info_t * info, long sector, int prot) -{ - int retcode = 0; - - flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS); - flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT); - if (prot) - flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET); - else - flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR); - - if ((retcode = - flash_status_check (info, sector, info->erase_blk_tout, - prot ? "protect" : "unprotect")) == 0) { - - info->protect[sector] = prot; - - /* - * On some of Intel's flash chips (marked via legacy_unlock) - * unprotect unprotects all locking. - */ - if ((prot == 0) && (info->legacy_unlock)) { - flash_sect_t i; - - for (i = 0; i < info->sector_count; i++) { - if (info->protect[i]) - flash_real_protect (info, i, 1); - } - } - } - return retcode; -} - -static int cfi_protect(struct cdev *cdev, size_t count, unsigned long offset, int prot) -{ - flash_info_t *finfo = (flash_info_t *)cdev->priv; - unsigned long start, end; - int i, ret = 0; - const char *action = (prot? "protect" : "unprotect"); - - printf("%s: %s 0x%08x (size %d)\n", __FUNCTION__, - action, cdev->dev->map_base + offset, count); - - start = find_sector(finfo, cdev->dev->map_base + offset); - end = find_sector(finfo, cdev->dev->map_base + offset + count - 1); - - for (i = start; i <= end; i++) { - ret = flash_real_protect (finfo, i, prot); - if (ret) - goto out; - } -out: - putchar('\n'); - return ret; -} - -static ssize_t cfi_write(struct cdev *cdev, const void *buf, size_t count, unsigned long offset, ulong flags) -{ - flash_info_t *finfo = (flash_info_t *)cdev->priv; - int ret; - - debug("cfi_write: buf=0x%08x addr=0x%08x count=0x%08x\n",buf, cdev->dev->map_base + offset, count); - - ret = write_buff (finfo, buf, cdev->dev->map_base + offset, count); - return ret == 0 ? count : -1; -} - -static void cfi_info (struct device_d* dev) -{ - flash_info_t *info = (flash_info_t *)dev->priv; - int i; - - if (info->flash_id != FLASH_MAN_CFI) { - puts ("missing or unknown FLASH type\n"); - return; - } - - printf ("CFI conformant FLASH (%d x %d)", - (info->portwidth << 3), (info->chipwidth << 3)); - printf (" Size: %ld MB in %d Sectors\n", - info->size >> 20, info->sector_count); - printf (" "); - switch (info->vendor) { - case CFI_CMDSET_INTEL_STANDARD: - printf ("Intel Standard"); - break; - case CFI_CMDSET_INTEL_EXTENDED: - printf ("Intel Extended"); - break; - case CFI_CMDSET_AMD_STANDARD: - printf ("AMD Standard"); - break; - case CFI_CMDSET_AMD_EXTENDED: - printf ("AMD Extended"); - break; - default: - printf ("Unknown (%d)", info->vendor); - break; - } - printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X", - info->manufacturer_id, info->device_id); - if (info->device_id == 0x7E) { - printf("%04X", info->device_id2); - } - printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n", - info->erase_blk_tout, - info->write_tout); - if (info->buffer_size > 1) { - printf (" Buffer write timeout: %ld ms, buffer size: %d bytes\n", - info->buffer_write_tout, - info->buffer_size); - } - - puts ("\n Sector Start Addresses:"); - for (i = 0; i < info->sector_count; ++i) { - if ((i % 5) == 0) - printf ("\n"); -#ifdef CFG_FLASH_EMPTY_INFO - { - int k; - int size; - int erased; - volatile unsigned long *flash; - - /* - * Check if whole sector is erased - */ - if (i != (info->sector_count - 1)) - size = info->start[i + 1] - info->start[i]; - else - size = info->start[0] + info->size - info->start[i]; - erased = 1; - flash = (volatile unsigned long *) info->start[i]; - size = size >> 2; /* divide by 4 for longword access */ - for (k = 0; k < size; k++) { - if (*flash++ != 0xffffffff) { - erased = 0; - break; - } - } - - /* print empty and read-only info */ - printf (" %08lX %c %s ", - info->start[i], - erased ? 'E' : ' ', - info->protect[i] ? "RO" : " "); - } -#else /* ! CFG_FLASH_EMPTY_INFO */ - printf (" %08lX %s ", - info->start[i], - info->protect[i] ? "RO" : " "); -#endif - } - putchar('\n'); - return; -} - -#if 0 -/* - * flash_read_user_serial - read the OneTimeProgramming cells - */ -static void flash_read_user_serial (flash_info_t * info, void *buffer, int offset, - int len) -{ - uchar *src; - uchar *dst; - - dst = buffer; - src = flash_make_addr (info, 0, FLASH_OFFSET_USER_PROTECTION); - flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID); - memcpy (dst, src + offset, len); - flash_write_cmd (info, 0, 0, info->cmd_reset); -} - -/* - * flash_read_factory_serial - read the device Id from the protection area - */ -static void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset, - int len) -{ - uchar *src; - - src = flash_make_addr (info, 0, FLASH_OFFSET_INTEL_PROTECTION); - flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID); - memcpy (buffer, src + offset, len); - flash_write_cmd (info, 0, 0, info->cmd_reset); -} - -#endif - -int flash_status_check (flash_info_t * info, flash_sect_t sector, - uint64_t tout, char *prompt) -{ - return info->cfi_cmd_set->flash_status_check(info, sector, tout, prompt); -} - -/* - * wait for XSR.7 to be set. Time out with an error if it does not. - * This routine does not set the flash to read-array mode. - */ -int flash_generic_status_check (flash_info_t * info, flash_sect_t sector, - uint64_t tout, char *prompt) -{ - uint64_t start; - - tout *= 1000000; - - /* Wait for command completion */ - start = get_time_ns(); - while (info->cfi_cmd_set->flash_is_busy (info, sector)) { - if (is_timeout(start, tout)) { - printf ("Flash %s timeout at address %lx data %lx\n", - prompt, info->start[sector], - flash_read_long (info, sector, 0)); - flash_write_cmd (info, sector, 0, info->cmd_reset); - return ERR_TIMOUT; - } - udelay (1); /* also triggers watchdog */ - } - return ERR_OK; -} - -/* - * make a proper sized command based on the port and chip widths - */ -void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf) -{ - int i; - uchar *cp = (uchar *) cmdbuf; - -#if defined(__LITTLE_ENDIAN) - for (i = info->portwidth; i > 0; i--) -#else - for (i = 1; i <= info->portwidth; i++) -#endif - *cp++ = (i & (info->chipwidth - 1)) ? '\0' : cmd; -} - -/* - * Write a proper sized command to the correct address - */ -void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) -{ - - uchar *addr; - cfiword_t cword; - - addr = flash_make_addr (info, sect, offset); - flash_make_cmd (info, cmd, &cword); - flash_write_word(info, cword, addr); -} - -int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) -{ - cfiptr_t cptr; - cfiword_t cword; - int retval; - - cptr.cp = flash_make_addr (info, sect, offset); - flash_make_cmd (info, cmd, &cword); - - debug ("is= cmd %x(%c) addr %p ", cmd, cmd, cptr.cp); - if (bankwidth_is_1(info)) { - debug ("is= %x %x\n", cptr.cp[0], cword.c); - retval = (cptr.cp[0] == cword.c); - } else if (bankwidth_is_2(info)) { - debug ("is= %4.4x %4.4x\n", cptr.wp[0], cword.w); - retval = (cptr.wp[0] == cword.w); - } else if (bankwidth_is_4(info)) { - debug ("is= %8.8lx %8.8lx\n", cptr.lp[0], cword.l); - retval = (cptr.lp[0] == cword.l); - } else if (bankwidth_is_8(info)) { -#ifdef DEBUG - { - char str1[20]; - char str2[20]; - - print_longlong (str1, cptr.llp[0]); - print_longlong (str2, cword.ll); - debug ("is= %s %s\n", str1, str2); - } -#endif - retval = (cptr.llp[0] == cword.ll); - } else - retval = 0; - - return retval; -} - -int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd) -{ - cfiptr_t cptr; - cfiword_t cword; - int retval; - - cptr.cp = flash_make_addr (info, sect, offset); - flash_make_cmd (info, cmd, &cword); - if (bankwidth_is_1(info)) { - retval = ((cptr.cp[0] & cword.c) == cword.c); - } else if (bankwidth_is_2(info)) { - retval = ((cptr.wp[0] & cword.w) == cword.w); - } else if (bankwidth_is_4(info)) { - retval = ((cptr.lp[0] & cword.l) == cword.l); - } else if (bankwidth_is_8(info)) { - retval = ((cptr.llp[0] & cword.ll) == cword.ll); - } else - retval = 0; - - return retval; -} - -struct file_operations cfi_ops = { - .read = mem_read, - .write = cfi_write, - .lseek = dev_lseek_default, - .erase = cfi_erase, - .protect = cfi_protect, - .memmap = generic_memmap_ro, -}; - -static int cfi_probe (struct device_d *dev) -{ - unsigned long size = 0; - flash_info_t *info = xzalloc(sizeof(flash_info_t)); - - dev->priv = (void *)info; - - printf("cfi_probe: %s base: 0x%08x size: 0x%08x\n", dev->name, dev->map_base, dev->size); - - /* Init: no FLASHes known */ - info->flash_id = FLASH_UNKNOWN; - size += info->size = flash_get_size(info, dev->map_base); - - if (dev->size == 0) { - printf("cfi_probe: size : 0x%08x\n", info->size); - dev->size = info->size; - } - - if (info->flash_id == FLASH_UNKNOWN) { - printf ("## Unknown FLASH on Bank at 0x%08x - Size = 0x%08lx = %ld MB\n", - dev->map_base, info->size, info->size << 20); - return -ENODEV; - } - - info->cdev.name = asprintf("nor%d", dev->id); - info->cdev.size = info->size; - info->cdev.dev = dev; - info->cdev.ops = &cfi_ops; - info->cdev.priv = info; - devfs_create(&info->cdev); - - return 0; -} - -static struct driver_d cfi_driver = { - .name = "cfi_flash", - .probe = cfi_probe, - .info = cfi_info, -}; - -static int cfi_init(void) -{ - return register_driver(&cfi_driver); -} - -device_initcall(cfi_init); - |