diff options
Diffstat (limited to 'arch/arm/boards/edb93xx/edb93xx.c')
-rw-r--r-- | arch/arm/boards/edb93xx/edb93xx.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/arch/arm/boards/edb93xx/edb93xx.c b/arch/arm/boards/edb93xx/edb93xx.c new file mode 100644 index 0000000000..b0078a5227 --- /dev/null +++ b/arch/arm/boards/edb93xx/edb93xx.c @@ -0,0 +1,180 @@ +/* + * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net> + * + * 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 <driver.h> +#include <environment.h> +#include <fs.h> +#include <init.h> +#include <partition.h> +#include <asm/armlinux.h> +#include <asm/io.h> +#include <asm/mach-types.h> +#include <mach/ep93xx-regs.h> +#include "edb93xx.h" + +#define DEVCFG_U1EN (1 << 18) + +/* + * Up to 32MiB NOR type flash, connected to + * CS line 6, data width is 16 bit + */ +static struct device_d cfi_dev = { + .name = "cfi_flash", + .map_base = 0x60000000, + .size = EDB93XX_CFI_FLASH_SIZE, +}; + +static struct memory_platform_data ram_dev_pdata0 = { + .name = "ram0", + .flags = DEVFS_RDWR, +}; + +static struct device_d sdram0_dev = { + .name = "mem", + .map_base = CONFIG_EP93XX_SDRAM_BANK0_BASE, + .size = CONFIG_EP93XX_SDRAM_BANK0_SIZE, + .platform_data = &ram_dev_pdata0, +}; + +#if (CONFIG_EP93XX_SDRAM_NUM_BANKS >= 2) +static struct memory_platform_data ram_dev_pdata1 = { + .name = "ram1", + .flags = DEVFS_RDWR, +}; + +static struct device_d sdram1_dev = { + .name = "mem", + .map_base = CONFIG_EP93XX_SDRAM_BANK1_BASE, + .size = CONFIG_EP93XX_SDRAM_BANK1_SIZE, + .platform_data = &ram_dev_pdata1, +}; +#endif + +#if (CONFIG_EP93XX_SDRAM_NUM_BANKS >= 3) +static struct memory_platform_data ram_dev_pdata2 = { + .name = "ram2", + .flags = DEVFS_RDWR, +}; + +static struct device_d sdram2_dev = { + .name = "mem", + .map_base = CONFIG_EP93XX_SDRAM_BANK2_BASE, + .size = CONFIG_EP93XX_SDRAM_BANK2_SIZE, + .platform_data = &ram_dev_pdata2, +}; +#endif + +#if (CONFIG_EP93XX_SDRAM_NUM_BANKS == 4) +static struct memory_platform_data ram_dev_pdata3 = { + .name = "ram3", + .flags = DEVFS_RDWR, +}; + +static struct device_d sdram3_dev = { + .name = "mem", + .map_base = CONFIG_EP93XX_SDRAM_BANK3_BASE, + .size = CONFIG_EP93XX_SDRAM_BANK3_SIZE, + .platform_data = &ram_dev_pdata3, +}; +#endif + +static struct device_d eth_dev = { + .name = "ep93xx_eth", +}; + +static int ep93xx_devices_init(void) +{ + register_device(&cfi_dev); + + /* + * Create partitions that should be + * not touched by any regular user + */ + devfs_add_partition("nor0", 0x00000, 0x40000, PARTITION_FIXED, "self0"); + devfs_add_partition("nor0", 0x40000, 0x20000, PARTITION_FIXED, "env0"); + + protect_file("/dev/env0", 1); + + register_device(&sdram0_dev); +#if (CONFIG_EP93XX_SDRAM_NUM_BANKS >= 2) + register_device(&sdram1_dev); +#endif +#if (CONFIG_EP93XX_SDRAM_NUM_BANKS >= 3) + register_device(&sdram2_dev); +#endif +#if (CONFIG_EP93XX_SDRAM_NUM_BANKS == 4) + register_device(&sdram3_dev); +#endif + + armlinux_add_dram(&sdram0_dev); +#if (CONFIG_EP93XX_SDRAM_NUM_BANKS >= 2) + armlinux_add_dram(&sdram1_dev); +#endif +#if (CONFIG_EP93XX_SDRAM_NUM_BANKS >= 3) + armlinux_add_dram(&sdram2_dev); +#endif +#if (CONFIG_EP93XX_SDRAM_NUM_BANKS == 4) + armlinux_add_dram(&sdram3_dev); +#endif + + register_device(ð_dev); + + armlinux_set_bootparams((void *)CONFIG_EP93XX_SDRAM_BANK0_BASE + 0x100); + + armlinux_set_architecture(MACH_TYPE); + + return 0; +} + +device_initcall(ep93xx_devices_init); + +static struct device_d edb93xx_serial_device = { + .name = "pl010_serial", + .map_base = UART1_BASE, + .size = 4096, +}; + +static int edb93xx_console_init(void) +{ + struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE; + + /* + * set UARTBAUD bit to drive UARTs with 14.7456MHz instead of + * 14.7456/2 MHz + */ + uint32_t value = readl(&syscon->pwrcnt); + value |= SYSCON_PWRCNT_UART_BAUD; + writel(value, &syscon->pwrcnt); + + /* Enable UART1 */ + value = readl(&syscon->devicecfg); + value |= DEVCFG_U1EN; + writel(0xAA, &syscon->sysswlock); + writel(value, &syscon->devicecfg); + + register_device(&edb93xx_serial_device); + + return 0; +} + +console_initcall(edb93xx_console_init); |