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-rw-r--r--board/tqm5200/cam5200_flash.c786
1 files changed, 786 insertions, 0 deletions
diff --git a/board/tqm5200/cam5200_flash.c b/board/tqm5200/cam5200_flash.c
new file mode 100644
index 0000000000..1a40633e56
--- /dev/null
+++ b/board/tqm5200/cam5200_flash.c
@@ -0,0 +1,786 @@
+/*
+ * (C) Copyright 2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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
+ */
+
+#include <common.h>
+#include <mpc5xxx.h>
+#include <asm/processor.h>
+
+#ifdef CONFIG_CAM5200
+
+#if 0
+#define DEBUGF(x...) printf(x)
+#else
+#define DEBUGF(x...)
+#endif
+
+#define swap16(x) __swab16(x)
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+/*
+ * CAM5200 is a TQM5200B based board. Additionally it also features
+ * a NIOS cpu. The NIOS CPU peripherals are accessible through MPC5xxx
+ * Local Bus on CS5. This includes 32 bit wide RAM and SRAM as well as
+ * 16 bit wide flash device. Big Endian order on a 32 bit CS5 makes
+ * access to flash chip slightly more complicated as additional byte
+ * swapping is necessary within each 16 bit wide flash 'word'.
+ *
+ * This driver's task is to handle both flash devices: 32 bit TQM5200B
+ * flash chip and 16 bit NIOS cpu flash chip. In the below
+ * flash_addr_table table we use least significant address bit to mark
+ * 16 bit flash bank and two sets of routines *_32 and *_16 to handle
+ * specifics of both flashes.
+ */
+static unsigned long flash_addr_table[][CFG_MAX_FLASH_BANKS] = {
+ {CFG_BOOTCS_START, CFG_CS5_START | 1}
+};
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static int write_word(flash_info_t * info, ulong dest, ulong data);
+#ifdef CFG_FLASH_2ND_16BIT_DEV
+static int write_word_32(flash_info_t * info, ulong dest, ulong data);
+static int write_word_16(flash_info_t * info, ulong dest, ulong data);
+static int flash_erase_32(flash_info_t * info, int s_first, int s_last);
+static int flash_erase_16(flash_info_t * info, int s_first, int s_last);
+static ulong flash_get_size_32(vu_long * addr, flash_info_t * info);
+static ulong flash_get_size_16(vu_long * addr, flash_info_t * info);
+#endif
+
+void flash_print_info(flash_info_t * info)
+{
+ int i, k;
+ int size, erased;
+ volatile unsigned long *flash;
+
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf("missing or unknown FLASH type\n");
+ return;
+ }
+
+ switch (info->flash_id & FLASH_VENDMASK) {
+ case FLASH_MAN_AMD:
+ printf("AMD ");
+ break;
+ case FLASH_MAN_FUJ:
+ printf("FUJITSU ");
+ break;
+ default:
+ printf("Unknown Vendor ");
+ break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK) {
+ case FLASH_S29GL128N:
+ printf ("S29GL128N (256 Mbit, uniform sector size)\n");
+ break;
+ case FLASH_AM320B:
+ printf ("29LV320B (32 Mbit, bottom boot sect)\n");
+ break;
+ case FLASH_AM320T:
+ printf ("29LV320T (32 Mbit, top boot sect)\n");
+ break;
+ default:
+ printf("Unknown Chip Type\n");
+ break;
+ }
+
+ printf(" Size: %ld KB in %d Sectors\n",
+ info->size >> 10, info->sector_count);
+
+ printf(" Sector Start Addresses:");
+ for (i = 0; i < info->sector_count; ++i) {
+ /*
+ * 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;
+ }
+ }
+
+ if ((i % 5) == 0)
+ printf("\n ");
+
+ printf(" %08lX%s%s", info->start[i],
+ erased ? " E" : " ",
+ info->protect[i] ? "RO " : " ");
+ }
+ printf("\n");
+ return;
+}
+
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+#ifdef CFG_FLASH_2ND_16BIT_DEV
+static ulong flash_get_size(vu_long * addr, flash_info_t * info)
+{
+
+ DEBUGF("get_size: FLASH ADDR %08lx\n", addr);
+
+ /* bit 0 used for big flash marking */
+ if ((ulong)addr & 0x1)
+ return flash_get_size_16((vu_long *)((ulong)addr & 0xfffffffe), info);
+ else
+ return flash_get_size_32(addr, info);
+}
+
+static ulong flash_get_size_32(vu_long * addr, flash_info_t * info)
+#else
+static ulong flash_get_size(vu_long * addr, flash_info_t * info)
+#endif
+{
+ short i;
+ CFG_FLASH_WORD_SIZE value;
+ ulong base = (ulong) addr;
+ volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) addr;
+
+ DEBUGF("get_size32: FLASH ADDR: %08x\n", (unsigned)addr);
+
+ /* Write auto select command: read Manufacturer ID */
+ addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
+ addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
+ addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00900090;
+ udelay(1000);
+
+ value = addr2[0];
+ DEBUGF("FLASH MANUFACT: %x\n", value);
+
+ switch (value) {
+ case (CFG_FLASH_WORD_SIZE) AMD_MANUFACT:
+ info->flash_id = FLASH_MAN_AMD;
+ break;
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ info->sector_count = 0;
+ info->size = 0;
+ return (0); /* no or unknown flash */
+ }
+
+ value = addr2[1]; /* device ID */
+ DEBUGF("\nFLASH DEVICEID: %x\n", value);
+
+ switch (value) {
+ case AMD_ID_MIRROR:
+ DEBUGF("Mirror Bit flash: addr[14] = %08lX addr[15] = %08lX\n",
+ addr[14], addr[15]);
+ switch(addr[14]) {
+ case AMD_ID_GL128N_2:
+ if (addr[15] != AMD_ID_GL128N_3) {
+ DEBUGF("Chip: S29GL128N -> unknown\n");
+ info->flash_id = FLASH_UNKNOWN;
+ } else {
+ DEBUGF("Chip: S29GL128N\n");
+ info->flash_id += FLASH_S29GL128N;
+ info->sector_count = 128;
+ info->size = 0x02000000;
+ }
+ break;
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ return(0);
+ }
+ break;
+
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ return (0); /* => no or unknown flash */
+ }
+
+ /* set up sector start address table */
+ for (i = 0; i < info->sector_count; i++)
+ info->start[i] = base + (i * 0x00040000);
+
+ /* check for protected sectors */
+ for (i = 0; i < info->sector_count; i++) {
+ /* read sector protection at sector address, (A7 .. A0) = 0x02 */
+ /* D0 = 1 if protected */
+ addr2 = (volatile CFG_FLASH_WORD_SIZE *)(info->start[i]);
+
+ info->protect[i] = addr2[2] & 1;
+ }
+
+ /* issue bank reset to return to read mode */
+ addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0;
+
+ return (info->size);
+}
+
+static int wait_for_DQ7_32(flash_info_t * info, int sect)
+{
+ ulong start, now, last;
+ volatile CFG_FLASH_WORD_SIZE *addr =
+ (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
+
+ start = get_timer(0);
+ last = start;
+ while ((addr[0] & (CFG_FLASH_WORD_SIZE) 0x00800080) !=
+ (CFG_FLASH_WORD_SIZE) 0x00800080) {
+ if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
+ printf("Timeout\n");
+ return -1;
+ }
+ /* show that we're waiting */
+ if ((now - last) > 1000) { /* every second */
+ putc('.');
+ last = now;
+ }
+ }
+ return 0;
+}
+
+#ifdef CFG_FLASH_2ND_16BIT_DEV
+int flash_erase(flash_info_t * info, int s_first, int s_last)
+{
+ if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) {
+ return flash_erase_16(info, s_first, s_last);
+ } else {
+ return flash_erase_32(info, s_first, s_last);
+ }
+}
+
+static int flash_erase_32(flash_info_t * info, int s_first, int s_last)
+#else
+int flash_erase(flash_info_t * info, int s_first, int s_last)
+#endif
+{
+ volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
+ volatile CFG_FLASH_WORD_SIZE *addr2;
+ int flag, prot, sect, l_sect;
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ if (info->flash_id == FLASH_UNKNOWN)
+ printf("- missing\n");
+ else
+ printf("- no sectors to erase\n");
+ return 1;
+ }
+
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf("Can't erase unknown flash type - aborted\n");
+ return 1;
+ }
+
+ prot = 0;
+ for (sect = s_first; sect <= s_last; ++sect) {
+ if (info->protect[sect])
+ prot++;
+ }
+
+ if (prot)
+ printf("- Warning: %d protected sectors will not be erased!", prot);
+
+ printf("\n");
+
+ l_sect = -1;
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect <= s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
+
+ addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
+ addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
+ addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080;
+ addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
+ addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
+ addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00300030; /* sector erase */
+
+ l_sect = sect;
+ /*
+ * Wait for each sector to complete, it's more
+ * reliable. According to AMD Spec, you must
+ * issue all erase commands within a specified
+ * timeout. This has been seen to fail, especially
+ * if printf()s are included (for debug)!!
+ */
+ wait_for_DQ7_32(info, sect);
+ }
+ }
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+
+ /* wait at least 80us - let's wait 1 ms */
+ udelay(1000);
+
+ /* reset to read mode */
+ addr = (CFG_FLASH_WORD_SIZE *) info->start[0];
+ addr[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
+
+ printf(" done\n");
+ return 0;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
+{
+ ulong cp, wp, data;
+ int i, l, rc;
+
+ wp = (addr & ~3); /* get lower word aligned address */
+
+ /*
+ * handle unaligned start bytes
+ */
+ if ((l = addr - wp) != 0) {
+ data = 0;
+ for (i = 0, cp = wp; i < l; ++i, ++cp)
+ data = (data << 8) | (*(uchar *) cp);
+
+ for (; i < 4 && cnt > 0; ++i) {
+ data = (data << 8) | *src++;
+ --cnt;
+ ++cp;
+ }
+
+ for (; cnt == 0 && i < 4; ++i, ++cp)
+ data = (data << 8) | (*(uchar *) cp);
+
+ if ((rc = write_word(info, wp, data)) != 0)
+ return (rc);
+
+ wp += 4;
+ }
+
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 4) {
+ data = 0;
+ for (i = 0; i < 4; ++i)
+ data = (data << 8) | *src++;
+
+ if ((rc = write_word(info, wp, data)) != 0)
+ return (rc);
+
+ wp += 4;
+ cnt -= 4;
+ }
+
+ if (cnt == 0)
+ return (0);
+
+ /*
+ * handle unaligned tail bytes
+ */
+ data = 0;
+ for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
+ data = (data << 8) | *src++;
+ --cnt;
+ }
+ for (; i < 4; ++i, ++cp)
+ data = (data << 8) | (*(uchar *) cp);
+
+ return (write_word(info, wp, data));
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+#ifdef CFG_FLASH_2ND_16BIT_DEV
+static int write_word(flash_info_t * info, ulong dest, ulong data)
+{
+ if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) {
+ return write_word_16(info, dest, data);
+ } else {
+ return write_word_32(info, dest, data);
+ }
+}
+
+static int write_word_32(flash_info_t * info, ulong dest, ulong data)
+#else
+static int write_word(flash_info_t * info, ulong dest, ulong data)
+#endif
+{
+ volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
+ volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *) dest;
+ volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *) & data;
+ ulong start;
+ int i, flag;
+
+ /* Check if Flash is (sufficiently) erased */
+ if ((*((vu_long *)dest) & data) != data)
+ return (2);
+
+ for (i = 0; i < 4 / sizeof(CFG_FLASH_WORD_SIZE); i++) {
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
+ addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
+ addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00A000A0;
+
+ dest2[i] = data2[i];
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+
+ /* data polling for D7 */
+ start = get_timer(0);
+ while ((dest2[i] & (CFG_FLASH_WORD_SIZE) 0x00800080) !=
+ (data2[i] & (CFG_FLASH_WORD_SIZE) 0x00800080)) {
+
+ if (get_timer(start) > CFG_FLASH_WRITE_TOUT)
+ return (1);
+ }
+ }
+
+ return (0);
+}
+
+#ifdef CFG_FLASH_2ND_16BIT_DEV
+
+#undef CFG_FLASH_WORD_SIZE
+#define CFG_FLASH_WORD_SIZE unsigned short
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+static ulong flash_get_size_16(vu_long * addr, flash_info_t * info)
+{
+ short i;
+ CFG_FLASH_WORD_SIZE value;
+ ulong base = (ulong) addr;
+ volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) addr;
+
+ DEBUGF("get_size16: FLASH ADDR: %08x\n", (unsigned)addr);
+
+ /* issue bank reset to return to read mode */
+ addr2[0] = (CFG_FLASH_WORD_SIZE) 0xF000F000;
+
+ /* Write auto select command: read Manufacturer ID */
+ addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAA00AA00;
+ addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55005500;
+ addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x90009000;
+ udelay(1000);
+
+ value = swap16(addr2[0]);
+ DEBUGF("FLASH MANUFACT: %x\n", value);
+
+ switch (value) {
+ case (CFG_FLASH_WORD_SIZE) AMD_MANUFACT:
+ info->flash_id = FLASH_MAN_AMD;
+ break;
+ case (CFG_FLASH_WORD_SIZE) FUJ_MANUFACT:
+ info->flash_id = FLASH_MAN_FUJ;
+ break;
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ info->sector_count = 0;
+ info->size = 0;
+ return (0); /* no or unknown flash */
+ }
+
+ value = swap16(addr2[1]); /* device ID */
+ DEBUGF("\nFLASH DEVICEID: %x\n", value);
+
+ switch (value) {
+ case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320B:
+ info->flash_id += FLASH_AM320B;
+ info->sector_count = 71;
+ info->size = 0x00400000;
+ break; /* => 4 MB */
+ case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320T:
+ info->flash_id += FLASH_AM320T;
+ info->sector_count = 71;
+ info->size = 0x00400000;
+ break; /* => 4 MB */
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ return (0); /* => no or unknown flash */
+ }
+
+ if (info->flash_id & FLASH_BTYPE) {
+ /* set sector offsets for bottom boot block type */
+ info->start[0] = base + 0x00000000;
+ info->start[1] = base + 0x00002000;
+ info->start[2] = base + 0x00004000;
+ info->start[3] = base + 0x00006000;
+ info->start[4] = base + 0x00008000;
+ info->start[5] = base + 0x0000a000;
+ info->start[6] = base + 0x0000c000;
+ info->start[7] = base + 0x0000e000;
+
+ for (i = 8; i < info->sector_count; i++)
+ info->start[i] = base + (i * 0x00010000) - 0x00070000;
+ } else {
+ /* set sector offsets for top boot block type */
+ i = info->sector_count - 1;
+ info->start[i--] = base + info->size - 0x00002000;
+ info->start[i--] = base + info->size - 0x00004000;
+ info->start[i--] = base + info->size - 0x00006000;
+ info->start[i--] = base + info->size - 0x00008000;
+ info->start[i--] = base + info->size - 0x0000a000;
+ info->start[i--] = base + info->size - 0x0000c000;
+ info->start[i--] = base + info->size - 0x0000e000;
+
+ for (; i >= 0; i--)
+ info->start[i] = base + i * 0x00010000;
+ }
+
+ /* check for protected sectors */
+ for (i = 0; i < info->sector_count; i++) {
+ /* read sector protection at sector address, (A7 .. A0) = 0x02 */
+ /* D0 = 1 if protected */
+ addr2 = (volatile CFG_FLASH_WORD_SIZE *)(info->start[i]);
+
+ info->protect[i] = addr2[2] & 1;
+ }
+
+ /* issue bank reset to return to read mode */
+ addr2[0] = (CFG_FLASH_WORD_SIZE) 0xF000F000;
+
+ return (info->size);
+}
+
+static int wait_for_DQ7_16(flash_info_t * info, int sect)
+{
+ ulong start, now, last;
+ volatile CFG_FLASH_WORD_SIZE *addr =
+ (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
+
+ start = get_timer(0);
+ last = start;
+ while ((addr[0] & (CFG_FLASH_WORD_SIZE) 0x80008000) !=
+ (CFG_FLASH_WORD_SIZE) 0x80008000) {
+ if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
+ printf("Timeout\n");
+ return -1;
+ }
+ /* show that we're waiting */
+ if ((now - last) > 1000) { /* every second */
+ putc('.');
+ last = now;
+ }
+ }
+ return 0;
+}
+
+static int flash_erase_16(flash_info_t * info, int s_first, int s_last)
+{
+ volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
+ volatile CFG_FLASH_WORD_SIZE *addr2;
+ int flag, prot, sect, l_sect;
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ if (info->flash_id == FLASH_UNKNOWN)
+ printf("- missing\n");
+ else
+ printf("- no sectors to erase\n");
+ return 1;
+ }
+
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf("Can't erase unknown flash type - aborted\n");
+ return 1;
+ }
+
+ prot = 0;
+ for (sect = s_first; sect <= s_last; ++sect) {
+ if (info->protect[sect])
+ prot++;
+ }
+
+ if (prot)
+ printf("- Warning: %d protected sectors will not be erased!", prot);
+
+ printf("\n");
+
+ l_sect = -1;
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect <= s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
+
+ addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAA00AA00;
+ addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55005500;
+ addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x80008000;
+ addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAA00AA00;
+ addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55005500;
+ addr2[0] = (CFG_FLASH_WORD_SIZE) 0x30003000; /* sector erase */
+
+ l_sect = sect;
+ /*
+ * Wait for each sector to complete, it's more
+ * reliable. According to AMD Spec, you must
+ * issue all erase commands within a specified
+ * timeout. This has been seen to fail, especially
+ * if printf()s are included (for debug)!!
+ */
+ wait_for_DQ7_16(info, sect);
+ }
+ }
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+
+ /* wait at least 80us - let's wait 1 ms */
+ udelay(1000);
+
+ /* reset to read mode */
+ addr = (CFG_FLASH_WORD_SIZE *) info->start[0];
+ addr[0] = (CFG_FLASH_WORD_SIZE) 0xF000F000; /* reset bank */
+
+ printf(" done\n");
+ return 0;
+}
+
+static int write_word_16(flash_info_t * info, ulong dest, ulong data)
+{
+ volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
+ volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *) dest;
+ volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *) & data;
+ ulong start;
+ int i;
+
+ /* Check if Flash is (sufficiently) erased */
+ for (i = 0; i < 4 / sizeof(CFG_FLASH_WORD_SIZE); i++) {
+ if ((dest2[i] & swap16(data2[i])) != swap16(data2[i]))
+ return (2);
+ }
+
+ for (i = 0; i < 4 / sizeof(CFG_FLASH_WORD_SIZE); i++) {
+ int flag;
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAA00AA00;
+ addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55005500;
+ addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xA000A000;
+
+ dest2[i] = swap16(data2[i]);
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+
+ /* data polling for D7 */
+ start = get_timer(0);
+ while ((dest2[i] & (CFG_FLASH_WORD_SIZE) 0x80008000) !=
+ (swap16(data2[i]) & (CFG_FLASH_WORD_SIZE) 0x80008000)) {
+
+ if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+ return (1);
+ }
+ }
+ }
+
+ return (0);
+}
+#endif /* CFG_FLASH_2ND_16BIT_DEV */
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static ulong flash_get_size(vu_long * addr, flash_info_t * info);
+static int write_word(flash_info_t * info, ulong dest, ulong data);
+
+/*-----------------------------------------------------------------------
+ */
+
+unsigned long flash_init(void)
+{
+ unsigned long total_b = 0;
+ unsigned long size_b[CFG_MAX_FLASH_BANKS];
+ unsigned short index = 0;
+ int i;
+
+ DEBUGF("\n");
+ DEBUGF("FLASH: Index: %d\n", index);
+
+ /* Init: no FLASHes known */
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
+ flash_info[i].flash_id = FLASH_UNKNOWN;
+ flash_info[i].sector_count = -1;
+ flash_info[i].size = 0;
+
+ /* check whether the address is 0 */
+ if (flash_addr_table[index][i] == 0)
+ continue;
+
+ /* call flash_get_size() to initialize sector address */
+ size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
+ &flash_info[i]);
+
+ flash_info[i].size = size_b[i];
+
+ if (flash_info[i].flash_id == FLASH_UNKNOWN) {
+ printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
+ i, size_b[i], size_b[i] << 20);
+ flash_info[i].sector_count = -1;
+ flash_info[i].size = 0;
+ }
+
+ /* Monitor protection ON by default */
+ (void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,
+ CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
+ &flash_info[i]);
+#if defined(CFG_ENV_IS_IN_FLASH)
+ (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
+ &flash_info[i]);
+#if defined(CFG_ENV_ADDR_REDUND)
+ (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
+ CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
+ &flash_info[i]);
+#endif
+#endif
+ total_b += flash_info[i].size;
+ }
+
+ return total_b;
+}
+#endif /* ifdef CONFIG_CAM5200 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-24 22:44:27 +0000