diff options
Diffstat (limited to 'arch/arm/mach-omap2/board-igep0020.c')
| -rw-r--r-- | arch/arm/mach-omap2/board-igep0020.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c index f6899f9dc1c..8ed935ca1ef 100644 --- a/arch/arm/mach-omap2/board-igep0020.c +++ b/arch/arm/mach-omap2/board-igep0020.c @@ -29,6 +29,7 @@ #include <plat/gpmc.h> #include <plat/usb.h> #include <plat/display.h> +#include <plat/onenand.h> #include "mux.h" #include "hsmmc.h" @@ -41,6 +42,105 @@ #define IGEP2_GPIO_LED1_RED 28 #define IGEP2_GPIO_DVI_PUP 170 +#if defined(CONFIG_MTD_ONENAND_OMAP2) || \ + defined(CONFIG_MTD_ONENAND_OMAP2_MODULE) + +#define ONENAND_MAP 0x20000000 + +/* NAND04GR4E1A ( x2 Flash built-in COMBO POP MEMORY ) + * Since the device is equipped with two DataRAMs, and two-plane NAND + * Flash memory array, these two component enables simultaneous program + * of 4KiB. Plane1 has only even blocks such as block0, block2, block4 + * while Plane2 has only odd blocks such as block1, block3, block5. + * So MTD regards it as 4KiB page size and 256KiB block size 64*(2*2048) + */ + +static struct mtd_partition igep2_onenand_partitions[] = { + { + .name = "X-Loader", + .offset = 0, + .size = 2 * (64*(2*2048)) + }, + { + .name = "U-Boot", + .offset = MTDPART_OFS_APPEND, + .size = 6 * (64*(2*2048)), + }, + { + .name = "Environment", + .offset = MTDPART_OFS_APPEND, + .size = 2 * (64*(2*2048)), + }, + { + .name = "Kernel", + .offset = MTDPART_OFS_APPEND, + .size = 12 * (64*(2*2048)), + }, + { + .name = "File System", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL, + }, +}; + +static int igep2_onenand_setup(void __iomem *onenand_base, int freq) +{ + /* nothing is required to be setup for onenand as of now */ + return 0; +} + +static struct omap_onenand_platform_data igep2_onenand_data = { + .parts = igep2_onenand_partitions, + .nr_parts = ARRAY_SIZE(igep2_onenand_partitions), + .onenand_setup = igep2_onenand_setup, + .dma_channel = -1, /* disable DMA in OMAP OneNAND driver */ +}; + +static struct platform_device igep2_onenand_device = { + .name = "omap2-onenand", + .id = -1, + .dev = { + .platform_data = &igep2_onenand_data, + }, +}; + +void __init igep2_flash_init(void) +{ + u8 cs = 0; + u8 onenandcs = GPMC_CS_NUM + 1; + + while (cs < GPMC_CS_NUM) { + u32 ret = 0; + ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1); + + /* Check if NAND/oneNAND is configured */ + if ((ret & 0xC00) == 0x800) + /* NAND found */ + pr_err("IGEP v2: Unsupported NAND found\n"); + else { + ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG7); + if ((ret & 0x3F) == (ONENAND_MAP >> 24)) + /* ONENAND found */ + onenandcs = cs; + } + cs++; + } + if (onenandcs > GPMC_CS_NUM) { + pr_err("IGEP v2: Unable to find configuration in GPMC\n"); + return; + } + + if (onenandcs < GPMC_CS_NUM) { + igep2_onenand_data.cs = onenandcs; + if (platform_device_register(&igep2_onenand_device) < 0) + pr_err("IGEP v2: Unable to register OneNAND device\n"); + } +} + +#else +void __init igep2_flash_init(void) {} +#endif + #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE) #include <linux/smsc911x.h> @@ -314,6 +414,7 @@ static void __init igep2_init(void) usb_musb_init(); usb_ehci_init(&ehci_pdata); + igep2_flash_init(); igep2_display_init(); igep2_init_smsc911x(); |