diff options
Diffstat (limited to 'arch/arm/plat-aspeed/dev-nor.c')
| -rw-r--r-- | arch/arm/plat-aspeed/dev-nor.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/arch/arm/plat-aspeed/dev-nor.c b/arch/arm/plat-aspeed/dev-nor.c new file mode 100644 index 000000000000..abf49c0df827 --- /dev/null +++ b/arch/arm/plat-aspeed/dev-nor.c @@ -0,0 +1,219 @@ +/******************************************************************************** +* File Name : linux/arch/arm/plat-aspeed/dev-nor.c +* Author : Ryan chen +* Description : ASPEED NOR Device +* +* Copyright (C) ASPEED Technology Inc. +* 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 + +* History : +* 1. 2012/08/01 ryan chen create this file +* +********************************************************************************/ + +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/platform_device.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <asm/mach/flash.h> + +#include <mach/irqs.h> +#include <mach/platform.h> +#include <plat/devs.h> +#include <plat/regs-fmc.h> +#include <asm/io.h> +#include <plat/ast-scu.h> + + +/* -------------------------------------------------------------------- + * NOR Flash + * -------------------------------------------------------------------- */ + +#if defined(CONFIG_MTD_AST) || defined(CONFIG_MTD_AST_MODULE) +/*--------------------------------------------------------- + * AST2300 1 NOR * 16MB + *--------------------------------------------------------*/ +static struct mtd_partition nor_partitions[] = { + /* bootloader (U-Boot, etc) in first sector */ + { + .name = "u-boot", + .offset = 0, + .size = 0x80000, + .mask_flags = MTD_WRITEABLE, /* force read-only */ + }, + /* kernel */ + { + .name = "kernel", + .offset = MTDPART_OFS_APPEND, + .size = 0x300000, + }, + /* file system */ + { + .name = "ramdisk", + .offset = MTDPART_OFS_APPEND, + .size = 0x500000, + }, + { + .name = "data", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL, + } +}; + +static struct flash_platform_data ast_nor_data = { + .map_name = "cfi_probe", + .width = 2, + .parts = nor_partitions, + .nr_parts = ARRAY_SIZE(nor_partitions), +}; + +#if defined(CONFIG_AST_CS0_NOR) +static struct resource ast_nor_resource0[] = { + { + .start = AST_CS0_DEF_BASE, + .end = AST_CS0_DEF_BASE + AST_NOR_SIZE- 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device ast_nor_device0 = { + .name = "ast-nor", + .id = 0, + .dev = { + .platform_data = &ast_nor_data, + }, + .num_resources = ARRAY_SIZE(ast_nor_resource0), + .resource = ast_nor_resource0, +}; +#endif + +#if defined(CONFIG_AST_CS1_NOR) +static struct resource ast_nor_resource1[] = { + { + .start = AST_CS1_DEF_BASE, + .end = AST_CS1_DEF_BASE + AST_NOR_SIZE- 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device ast_nor_device1 = { + .name = "ast-nor", + .id = 1, + .dev = { + .platform_data = &ast_nor_data, + }, + .num_resources = ARRAY_SIZE(ast_nor_resource1), + .resource = ast_nor_resource1, +}; +#endif + +#if defined(CONFIG_AST_CS2_NOR) +static struct resource ast_nor_resource2[] = { + { + .start = AST_CS2_DEF_BASE, + .end = AST_CS2_DEF_BASE + AST_NOR_SIZE- 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device ast_nor_device2 = { + .name = "ast-nor", + .id = 2, + .dev = { + .platform_data = &ast_nor_data, + }, + .num_resources = ARRAY_SIZE(ast_nor_resource2), + .resource = ast_nor_resource2, +}; +#endif + +#if defined(CONFIG_AST_CS3_NOR) +static struct resource ast_nor_resource3[] = { + { + .start = AST_CS3_DEF_BASE, + .end = AST_CS3_DEF_BASE + AST_NOR_SIZE- 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device ast_nor_device3 = { + .name = "ast-nor", + .id = 3, + .dev = { + .platform_data = &ast_nor_data, + }, + .num_resources = ARRAY_SIZE(ast_nor_resource3), + .resource = ast_nor_resource3, +}; +#endif + +#if defined(CONFIG_AST_CS4_NOR) +static struct resource ast_nor_resource4[] = { + { + .start = AST_CS4_DEF_BASE, + .end = AST_CS4_DEF_BASE + AST_NOR_SIZE- 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device ast_nor_device4 = { + .name = "ast-nor", + .id = 4, + .dev = { + .platform_data = &ast_nor_data, + }, + .num_resources = ARRAY_SIZE(ast_nor_resource4), + .resource = ast_nor_resource4, +}; +#endif + +/*-------------------------------------*/ +void __init ast_add_device_flash(void) +{ + void __iomem *fmc_regs = ioremap(AST_FMC_BASE, 4*SZ_16); + + ast_scu_multi_func_nor(); + +#if defined(CONFIG_AST_CS0_NOR) + //Enable NOR ACK + ast_scu_multi_func_romcs(0); + platform_device_register(&ast_nor_device0); + writel((readl(fmc_regs) | FMC_SET_WRITE_CS(0)) & FMC_MASK_TYPE_CS(0), fmc_regs); +#endif +#if defined(CONFIG_AST_CS1_NOR) + ast_scu_multi_func_romcs(1); + writel((readl(fmc_regs) | FMC_SET_WRITE_CS(1)) & FMC_MASK_TYPE_CS(1), fmc_regs); + platform_device_register(&ast_nor_device1); +#endif +#if defined(CONFIG_AST_CS2_NOR) + ast_scu_multi_func_romcs(2); + writel((readl(fmc_regs) | FMC_SET_WRITE_CS(2)) & FMC_MASK_TYPE_CS(2), fmc_regs); + platform_device_register(&ast_nor_device2); +#endif +#if defined(CONFIG_AST_CS3_NOR) + ast_scu_multi_func_romcs(3); + writel((readl(fmc_regs) | FMC_SET_WRITE_CS(3)) & FMC_MASK_TYPE_CS(3), fmc_regs); + platform_device_register(&ast_nor_device3); +#endif +#if defined(CONFIG_AST_CS4_NOR) + ast_scu_multi_func_romcs(4); + writel((readl(fmc_regs) | FMC_SET_WRITE_CS(4)) & FMC_MASK_TYPE_CS(4), fmc_regs); + platform_device_register(&ast_nor_device4); +#endif + iounmap(fmc_regs); + +} +#else +void __init ast_add_device_flash(void) {} +#endif |