Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 1 | /* |
| 2 | * board-sdp-flash.c |
| 3 | * Modified from mach-omap2/board-3430sdp-flash.c |
| 4 | * |
| 5 | * Copyright (C) 2009 Nokia Corporation |
| 6 | * Copyright (C) 2009 Texas Instruments |
| 7 | * |
| 8 | * Vimal Singh <vimalsingh@ti.com> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | #include <linux/mtd/physmap.h> |
| 18 | #include <linux/io.h> |
| 19 | |
| 20 | #include <plat/gpmc.h> |
| 21 | #include <plat/nand.h> |
| 22 | #include <plat/onenand.h> |
| 23 | #include <plat/tc.h> |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 24 | #include <mach/board-flash.h> |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 25 | |
| 26 | #define REG_FPGA_REV 0x10 |
| 27 | #define REG_FPGA_DIP_SWITCH_INPUT2 0x60 |
| 28 | #define MAX_SUPPORTED_GPMC_CONFIG 3 |
| 29 | |
| 30 | #define DEBUG_BASE 0x08000000 /* debug board */ |
| 31 | |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 32 | /* various memory sizes */ |
| 33 | #define FLASH_SIZE_SDPV1 SZ_64M /* NOR flash (64 Meg aligned) */ |
| 34 | #define FLASH_SIZE_SDPV2 SZ_128M /* NOR flash (256 Meg aligned) */ |
| 35 | |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 36 | static struct physmap_flash_data board_nor_data = { |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 37 | .width = 2, |
| 38 | }; |
| 39 | |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 40 | static struct resource board_nor_resource = { |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 41 | .flags = IORESOURCE_MEM, |
| 42 | }; |
| 43 | |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 44 | static struct platform_device board_nor_device = { |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 45 | .name = "physmap-flash", |
| 46 | .id = 0, |
| 47 | .dev = { |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 48 | .platform_data = &board_nor_data, |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 49 | }, |
| 50 | .num_resources = 1, |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 51 | .resource = &board_nor_resource, |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 52 | }; |
| 53 | |
| 54 | static void |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 55 | __init board_nor_init(struct mtd_partition *nor_parts, u8 nr_parts, u8 cs) |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 56 | { |
| 57 | int err; |
| 58 | |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 59 | board_nor_data.parts = nor_parts; |
| 60 | board_nor_data.nr_parts = nr_parts; |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 61 | |
| 62 | /* Configure start address and size of NOR device */ |
| 63 | if (omap_rev() >= OMAP3430_REV_ES1_0) { |
| 64 | err = gpmc_cs_request(cs, FLASH_SIZE_SDPV2 - 1, |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 65 | (unsigned long *)&board_nor_resource.start); |
| 66 | board_nor_resource.end = board_nor_resource.start |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 67 | + FLASH_SIZE_SDPV2 - 1; |
| 68 | } else { |
| 69 | err = gpmc_cs_request(cs, FLASH_SIZE_SDPV1 - 1, |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 70 | (unsigned long *)&board_nor_resource.start); |
| 71 | board_nor_resource.end = board_nor_resource.start |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 72 | + FLASH_SIZE_SDPV1 - 1; |
| 73 | } |
| 74 | if (err < 0) { |
| 75 | printk(KERN_ERR "NOR: Can't request GPMC CS\n"); |
| 76 | return; |
| 77 | } |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 78 | if (platform_device_register(&board_nor_device) < 0) |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 79 | printk(KERN_ERR "Unable to register NOR device\n"); |
| 80 | } |
| 81 | |
| 82 | #if defined(CONFIG_MTD_ONENAND_OMAP2) || \ |
| 83 | defined(CONFIG_MTD_ONENAND_OMAP2_MODULE) |
| 84 | static struct omap_onenand_platform_data board_onenand_data = { |
| 85 | .dma_channel = -1, /* disable DMA in OMAP OneNAND driver */ |
| 86 | }; |
| 87 | |
| 88 | static void |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 89 | __init board_onenand_init(struct mtd_partition *onenand_parts, |
| 90 | u8 nr_parts, u8 cs) |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 91 | { |
| 92 | board_onenand_data.cs = cs; |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 93 | board_onenand_data.parts = onenand_parts; |
| 94 | board_onenand_data.nr_parts = nr_parts; |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 95 | |
| 96 | gpmc_onenand_init(&board_onenand_data); |
| 97 | } |
| 98 | #else |
| 99 | static void |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 100 | __init board_onenand_init(struct mtd_partition *nor_parts, u8 nr_parts, u8 cs) |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 101 | { |
| 102 | } |
| 103 | #endif /* CONFIG_MTD_ONENAND_OMAP2 || CONFIG_MTD_ONENAND_OMAP2_MODULE */ |
| 104 | |
| 105 | #if defined(CONFIG_MTD_NAND_OMAP2) || \ |
| 106 | defined(CONFIG_MTD_NAND_OMAP2_MODULE) |
| 107 | |
| 108 | /* Note that all values in this struct are in nanoseconds */ |
| 109 | static struct gpmc_timings nand_timings = { |
| 110 | |
| 111 | .sync_clk = 0, |
| 112 | |
| 113 | .cs_on = 0, |
| 114 | .cs_rd_off = 36, |
| 115 | .cs_wr_off = 36, |
| 116 | |
| 117 | .adv_on = 6, |
| 118 | .adv_rd_off = 24, |
| 119 | .adv_wr_off = 36, |
| 120 | |
| 121 | .we_off = 30, |
| 122 | .oe_off = 48, |
| 123 | |
| 124 | .access = 54, |
| 125 | .rd_cycle = 72, |
| 126 | .wr_cycle = 72, |
| 127 | |
| 128 | .wr_access = 30, |
| 129 | .wr_data_mux_bus = 0, |
| 130 | }; |
| 131 | |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 132 | static struct omap_nand_platform_data board_nand_data = { |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 133 | .nand_setup = NULL, |
| 134 | .gpmc_t = &nand_timings, |
| 135 | .dma_channel = -1, /* disable DMA in OMAP NAND driver */ |
| 136 | .dev_ready = NULL, |
| 137 | .devsize = 0, /* '0' for 8-bit, '1' for 16-bit device */ |
| 138 | }; |
| 139 | |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 140 | void |
| 141 | __init board_nand_init(struct mtd_partition *nand_parts, u8 nr_parts, u8 cs) |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 142 | { |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 143 | board_nand_data.cs = cs; |
| 144 | board_nand_data.parts = nand_parts; |
| 145 | board_nand_data.nr_parts = nr_parts; |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 146 | |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 147 | gpmc_nand_init(&board_nand_data); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 148 | } |
| 149 | #else |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 150 | void |
| 151 | __init board_nand_init(struct mtd_partition *nand_parts, u8 nr_parts, u8 cs) |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 152 | { |
| 153 | } |
| 154 | #endif /* CONFIG_MTD_NAND_OMAP2 || CONFIG_MTD_NAND_OMAP2_MODULE */ |
| 155 | |
| 156 | /** |
| 157 | * get_gpmc0_type - Reads the FPGA DIP_SWITCH_INPUT_REGISTER2 to get |
| 158 | * the various cs values. |
| 159 | */ |
| 160 | static u8 get_gpmc0_type(void) |
| 161 | { |
| 162 | u8 cs = 0; |
| 163 | void __iomem *fpga_map_addr; |
| 164 | |
| 165 | fpga_map_addr = ioremap(DEBUG_BASE, 4096); |
| 166 | if (!fpga_map_addr) |
| 167 | return -ENOMEM; |
| 168 | |
| 169 | if (!(__raw_readw(fpga_map_addr + REG_FPGA_REV))) |
| 170 | /* we dont have an DEBUG FPGA??? */ |
| 171 | /* Depend on #defines!! default to strata boot return param */ |
| 172 | goto unmap; |
| 173 | |
| 174 | /* S8-DIP-OFF = 1, S8-DIP-ON = 0 */ |
| 175 | cs = __raw_readw(fpga_map_addr + REG_FPGA_DIP_SWITCH_INPUT2) & 0xf; |
| 176 | |
| 177 | /* ES2.0 SDP's onwards 4 dip switches are provided for CS */ |
| 178 | if (omap_rev() >= OMAP3430_REV_ES1_0) |
| 179 | /* change (S8-1:4=DS-2:0) to (S8-4:1=DS-2:0) */ |
| 180 | cs = ((cs & 8) >> 3) | ((cs & 4) >> 1) | |
| 181 | ((cs & 2) << 1) | ((cs & 1) << 3); |
| 182 | else |
| 183 | /* change (S8-1:3=DS-2:0) to (S8-3:1=DS-2:0) */ |
| 184 | cs = ((cs & 4) >> 2) | (cs & 2) | ((cs & 1) << 2); |
| 185 | unmap: |
| 186 | iounmap(fpga_map_addr); |
| 187 | return cs; |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * sdp3430_flash_init - Identify devices connected to GPMC and register. |
| 192 | * |
| 193 | * @return - void. |
| 194 | */ |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 195 | void board_flash_init(struct flash_partitions partition_info[], |
| 196 | char chip_sel_board[][GPMC_CS_NUM]) |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 197 | { |
| 198 | u8 cs = 0; |
| 199 | u8 norcs = GPMC_CS_NUM + 1; |
| 200 | u8 nandcs = GPMC_CS_NUM + 1; |
| 201 | u8 onenandcs = GPMC_CS_NUM + 1; |
| 202 | u8 idx; |
| 203 | unsigned char *config_sel = NULL; |
| 204 | |
| 205 | /* REVISIT: Is this return correct idx for 2430 SDP? |
| 206 | * for which cs configuration matches for 2430 SDP? |
| 207 | */ |
| 208 | idx = get_gpmc0_type(); |
| 209 | if (idx >= MAX_SUPPORTED_GPMC_CONFIG) { |
| 210 | printk(KERN_ERR "%s: Invalid chip select: %d\n", __func__, cs); |
| 211 | return; |
| 212 | } |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 213 | config_sel = (unsigned char *)(chip_sel_board[idx]); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 214 | |
| 215 | while (cs < GPMC_CS_NUM) { |
| 216 | switch (config_sel[cs]) { |
| 217 | case PDC_NOR: |
| 218 | if (norcs > GPMC_CS_NUM) |
| 219 | norcs = cs; |
| 220 | break; |
| 221 | case PDC_NAND: |
| 222 | if (nandcs > GPMC_CS_NUM) |
| 223 | nandcs = cs; |
| 224 | break; |
| 225 | case PDC_ONENAND: |
| 226 | if (onenandcs > GPMC_CS_NUM) |
| 227 | onenandcs = cs; |
| 228 | break; |
| 229 | }; |
| 230 | cs++; |
| 231 | } |
| 232 | |
| 233 | if (norcs > GPMC_CS_NUM) |
Thomas Weber | 3184948 | 2010-03-25 20:21:54 +0000 | [diff] [blame] | 234 | printk(KERN_INFO "NOR: Unable to find configuration " |
| 235 | "in GPMC\n"); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 236 | else |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 237 | board_nor_init(partition_info[0].parts, |
| 238 | partition_info[0].nr_parts, norcs); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 239 | |
| 240 | if (onenandcs > GPMC_CS_NUM) |
| 241 | printk(KERN_INFO "OneNAND: Unable to find configuration " |
Thomas Weber | 3184948 | 2010-03-25 20:21:54 +0000 | [diff] [blame] | 242 | "in GPMC\n"); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 243 | else |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 244 | board_onenand_init(partition_info[1].parts, |
| 245 | partition_info[1].nr_parts, onenandcs); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 246 | |
| 247 | if (nandcs > GPMC_CS_NUM) |
| 248 | printk(KERN_INFO "NAND: Unable to find configuration " |
Thomas Weber | 3184948 | 2010-03-25 20:21:54 +0000 | [diff] [blame] | 249 | "in GPMC\n"); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 250 | else |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 251 | board_nand_init(partition_info[2].parts, |
| 252 | partition_info[2].nr_parts, nandcs); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 253 | } |