diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-davinci/board-dm644x-evm.c | 42 |
1 files changed, 36 insertions, 6 deletions
diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c index 5387e6b2040..c039674fe99 100644 --- a/arch/arm/mach-davinci/board-dm644x-evm.c +++ b/arch/arm/mach-davinci/board-dm644x-evm.c @@ -16,11 +16,12 @@ #include <linux/gpio.h> #include <linux/leds.h> #include <linux/memory.h> +#include <linux/etherdevice.h> #include <linux/i2c.h> #include <linux/i2c/pcf857x.h> #include <linux/i2c/at24.h> -#include <linux/etherdevice.h> + #include <linux/mtd/mtd.h> #include <linux/mtd/nand.h> #include <linux/mtd/partitions.h> @@ -113,20 +114,49 @@ static struct platform_device davinci_evm_norflash_device = { .resource = &davinci_evm_norflash_resource, }; +/* DM644x EVM includes a 64 MByte small-page NAND flash (16K blocks). + * It may used instead of the (default) NOR chip to boot, using TI's + * tools to install the secondary boot loader (UBL) and U-Boot. + */ struct mtd_partition davinci_evm_nandflash_partition[] = { - /* 5 MB space at the beginning for bootloader and kernel */ + /* Bootloader layout depends on whose u-boot is installed, but we + * can hide all the details. + * - block 0 for u-boot environment ... in mainline u-boot + * - block 1 for UBL (plus up to four backup copies in blocks 2..5) + * - blocks 6...? for u-boot + * - blocks 16..23 for u-boot environment ... in TI's u-boot + */ + { + .name = "bootloader", + .offset = 0, + .size = SZ_256K + SZ_128K, + .mask_flags = MTD_WRITEABLE, /* force read-only */ + }, + /* Kernel */ { - .name = "NAND filesystem", - .offset = 5 * SZ_1M, + .name = "kernel", + .offset = MTDPART_OFS_APPEND, + .size = SZ_4M, + .mask_flags = 0, + }, + /* File system (older GIT kernels started this on the 5MB mark) */ + { + .name = "filesystem", + .offset = MTDPART_OFS_APPEND, .size = MTDPART_SIZ_FULL, .mask_flags = 0, } + /* A few blocks at end hold a flash BBT ... created by TI's CCS + * using flashwriter_nand.out, but ignored by TI's versions of + * Linux and u-boot. We boot faster by using them. + */ }; static struct davinci_nand_pdata davinci_evm_nandflash_data = { .parts = davinci_evm_nandflash_partition, .nr_parts = ARRAY_SIZE(davinci_evm_nandflash_partition), .ecc_mode = NAND_ECC_HW, + .options = NAND_USE_FLASH_BBT, }; static struct resource davinci_evm_nandflash_resource[] = { @@ -151,14 +181,14 @@ static struct platform_device davinci_evm_nandflash_device = { .resource = davinci_evm_nandflash_resource, }; -static u64 davinci_fb_dma_mask = DMA_32BIT_MASK; +static u64 davinci_fb_dma_mask = DMA_BIT_MASK(32); static struct platform_device davinci_fb_device = { .name = "davincifb", .id = -1, .dev = { .dma_mask = &davinci_fb_dma_mask, - .coherent_dma_mask = DMA_32BIT_MASK, + .coherent_dma_mask = DMA_BIT_MASK(32), }, .num_resources = 0, }; |