Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 1 | /* |
Sanjeev Premi | f69eefd | 2011-02-15 10:57:31 +0000 | [diff] [blame] | 2 | * board-flash.c |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 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 | |
Arnd Bergmann | 2203747 | 2012-08-24 15:21:06 +0200 | [diff] [blame] | 20 | #include <linux/platform_data/mtd-nand-omap2.h> |
| 21 | #include <linux/platform_data/mtd-onenand-omap2.h> |
Manjunath Kondaiah G | 04aeae7 | 2010-10-08 09:58:35 -0700 | [diff] [blame] | 22 | |
Tony Lindgren | e4c060d | 2012-10-05 13:25:59 -0700 | [diff] [blame] | 23 | #include "soc.h" |
Tony Lindgren | dbc0416 | 2012-08-31 10:59:07 -0700 | [diff] [blame] | 24 | #include "common.h" |
Manjunath Kondaiah G | 04aeae7 | 2010-10-08 09:58:35 -0700 | [diff] [blame] | 25 | #include "board-flash.h" |
Afzal Mohammed | b6ab13e | 2012-09-29 10:32:42 +0530 | [diff] [blame] | 26 | #include "gpmc-onenand.h" |
Afzal Mohammed | bc3668e | 2012-09-29 12:26:13 +0530 | [diff] [blame] | 27 | #include "gpmc-nand.h" |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 28 | |
| 29 | #define REG_FPGA_REV 0x10 |
| 30 | #define REG_FPGA_DIP_SWITCH_INPUT2 0x60 |
| 31 | #define MAX_SUPPORTED_GPMC_CONFIG 3 |
| 32 | |
| 33 | #define DEBUG_BASE 0x08000000 /* debug board */ |
| 34 | |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 35 | /* various memory sizes */ |
| 36 | #define FLASH_SIZE_SDPV1 SZ_64M /* NOR flash (64 Meg aligned) */ |
| 37 | #define FLASH_SIZE_SDPV2 SZ_128M /* NOR flash (256 Meg aligned) */ |
| 38 | |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 39 | static struct physmap_flash_data board_nor_data = { |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 40 | .width = 2, |
| 41 | }; |
| 42 | |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 43 | static struct resource board_nor_resource = { |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 44 | .flags = IORESOURCE_MEM, |
| 45 | }; |
| 46 | |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 47 | static struct platform_device board_nor_device = { |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 48 | .name = "physmap-flash", |
| 49 | .id = 0, |
| 50 | .dev = { |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 51 | .platform_data = &board_nor_data, |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 52 | }, |
| 53 | .num_resources = 1, |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 54 | .resource = &board_nor_resource, |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 55 | }; |
| 56 | |
| 57 | static void |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 58 | __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] | 59 | { |
| 60 | int err; |
| 61 | |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 62 | board_nor_data.parts = nor_parts; |
| 63 | board_nor_data.nr_parts = nr_parts; |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 64 | |
| 65 | /* Configure start address and size of NOR device */ |
| 66 | if (omap_rev() >= OMAP3430_REV_ES1_0) { |
| 67 | err = gpmc_cs_request(cs, FLASH_SIZE_SDPV2 - 1, |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 68 | (unsigned long *)&board_nor_resource.start); |
| 69 | board_nor_resource.end = board_nor_resource.start |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 70 | + FLASH_SIZE_SDPV2 - 1; |
| 71 | } else { |
| 72 | err = gpmc_cs_request(cs, FLASH_SIZE_SDPV1 - 1, |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 73 | (unsigned long *)&board_nor_resource.start); |
| 74 | board_nor_resource.end = board_nor_resource.start |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 75 | + FLASH_SIZE_SDPV1 - 1; |
| 76 | } |
| 77 | if (err < 0) { |
Sanjeev Premi | adc5430 | 2011-02-15 10:57:32 +0000 | [diff] [blame] | 78 | pr_err("NOR: Can't request GPMC CS\n"); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 79 | return; |
| 80 | } |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 81 | if (platform_device_register(&board_nor_device) < 0) |
Sanjeev Premi | adc5430 | 2011-02-15 10:57:32 +0000 | [diff] [blame] | 82 | pr_err("Unable to register NOR device\n"); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | #if defined(CONFIG_MTD_ONENAND_OMAP2) || \ |
| 86 | defined(CONFIG_MTD_ONENAND_OMAP2_MODULE) |
| 87 | static struct omap_onenand_platform_data board_onenand_data = { |
| 88 | .dma_channel = -1, /* disable DMA in OMAP OneNAND driver */ |
| 89 | }; |
| 90 | |
Javier Martinez Canillas | 8259573 | 2012-05-09 14:19:14 -0700 | [diff] [blame] | 91 | void |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 92 | __init board_onenand_init(struct mtd_partition *onenand_parts, |
| 93 | u8 nr_parts, u8 cs) |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 94 | { |
| 95 | board_onenand_data.cs = cs; |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 96 | board_onenand_data.parts = onenand_parts; |
| 97 | board_onenand_data.nr_parts = nr_parts; |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 98 | |
| 99 | gpmc_onenand_init(&board_onenand_data); |
| 100 | } |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 101 | #endif /* CONFIG_MTD_ONENAND_OMAP2 || CONFIG_MTD_ONENAND_OMAP2_MODULE */ |
| 102 | |
| 103 | #if defined(CONFIG_MTD_NAND_OMAP2) || \ |
| 104 | defined(CONFIG_MTD_NAND_OMAP2_MODULE) |
| 105 | |
| 106 | /* Note that all values in this struct are in nanoseconds */ |
Afzal Mohammed | 2e61826 | 2012-02-29 18:11:56 +0530 | [diff] [blame] | 107 | struct gpmc_timings nand_default_timings[1] = { |
| 108 | { |
| 109 | .sync_clk = 0, |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 110 | |
Afzal Mohammed | 2e61826 | 2012-02-29 18:11:56 +0530 | [diff] [blame] | 111 | .cs_on = 0, |
| 112 | .cs_rd_off = 36, |
| 113 | .cs_wr_off = 36, |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 114 | |
Christoph Fritz | 4d58436 | 2013-04-19 18:29:41 +0200 | [diff] [blame] | 115 | .we_on = 6, |
| 116 | .oe_on = 6, |
| 117 | |
Afzal Mohammed | 2e61826 | 2012-02-29 18:11:56 +0530 | [diff] [blame] | 118 | .adv_on = 6, |
| 119 | .adv_rd_off = 24, |
| 120 | .adv_wr_off = 36, |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 121 | |
Afzal Mohammed | 2e61826 | 2012-02-29 18:11:56 +0530 | [diff] [blame] | 122 | .we_off = 30, |
| 123 | .oe_off = 48, |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 124 | |
Afzal Mohammed | 2e61826 | 2012-02-29 18:11:56 +0530 | [diff] [blame] | 125 | .access = 54, |
| 126 | .rd_cycle = 72, |
| 127 | .wr_cycle = 72, |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 128 | |
Afzal Mohammed | 2e61826 | 2012-02-29 18:11:56 +0530 | [diff] [blame] | 129 | .wr_access = 30, |
| 130 | .wr_data_mux_bus = 0, |
| 131 | }, |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 132 | }; |
| 133 | |
Afzal Mohammed | 2e61826 | 2012-02-29 18:11:56 +0530 | [diff] [blame] | 134 | static struct omap_nand_platform_data board_nand_data; |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 135 | |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 136 | void |
Afzal Mohammed | 2e61826 | 2012-02-29 18:11:56 +0530 | [diff] [blame] | 137 | __init board_nand_init(struct mtd_partition *nand_parts, u8 nr_parts, u8 cs, |
| 138 | int nand_type, struct gpmc_timings *gpmc_t) |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 139 | { |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 140 | board_nand_data.cs = cs; |
| 141 | board_nand_data.parts = nand_parts; |
Sukumar Ghorai | d5ce2b6 | 2011-01-28 15:42:03 +0530 | [diff] [blame] | 142 | board_nand_data.nr_parts = nr_parts; |
| 143 | board_nand_data.devsize = nand_type; |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 144 | |
Pekon Gupta | c66d039 | 2013-10-24 18:20:18 +0530 | [diff] [blame] | 145 | board_nand_data.ecc_opt = OMAP_ECC_BCH8_CODE_HW; |
Afzal Mohammed | bc3668e | 2012-09-29 12:26:13 +0530 | [diff] [blame] | 146 | gpmc_nand_init(&board_nand_data, gpmc_t); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 147 | } |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 148 | #endif /* CONFIG_MTD_NAND_OMAP2 || CONFIG_MTD_NAND_OMAP2_MODULE */ |
| 149 | |
| 150 | /** |
| 151 | * get_gpmc0_type - Reads the FPGA DIP_SWITCH_INPUT_REGISTER2 to get |
| 152 | * the various cs values. |
| 153 | */ |
| 154 | static u8 get_gpmc0_type(void) |
| 155 | { |
| 156 | u8 cs = 0; |
| 157 | void __iomem *fpga_map_addr; |
| 158 | |
| 159 | fpga_map_addr = ioremap(DEBUG_BASE, 4096); |
| 160 | if (!fpga_map_addr) |
| 161 | return -ENOMEM; |
| 162 | |
| 163 | if (!(__raw_readw(fpga_map_addr + REG_FPGA_REV))) |
| 164 | /* we dont have an DEBUG FPGA??? */ |
| 165 | /* Depend on #defines!! default to strata boot return param */ |
| 166 | goto unmap; |
| 167 | |
| 168 | /* S8-DIP-OFF = 1, S8-DIP-ON = 0 */ |
| 169 | cs = __raw_readw(fpga_map_addr + REG_FPGA_DIP_SWITCH_INPUT2) & 0xf; |
| 170 | |
| 171 | /* ES2.0 SDP's onwards 4 dip switches are provided for CS */ |
| 172 | if (omap_rev() >= OMAP3430_REV_ES1_0) |
| 173 | /* change (S8-1:4=DS-2:0) to (S8-4:1=DS-2:0) */ |
| 174 | cs = ((cs & 8) >> 3) | ((cs & 4) >> 1) | |
| 175 | ((cs & 2) << 1) | ((cs & 1) << 3); |
| 176 | else |
| 177 | /* change (S8-1:3=DS-2:0) to (S8-3:1=DS-2:0) */ |
| 178 | cs = ((cs & 4) >> 2) | (cs & 2) | ((cs & 1) << 2); |
| 179 | unmap: |
| 180 | iounmap(fpga_map_addr); |
| 181 | return cs; |
| 182 | } |
| 183 | |
| 184 | /** |
Sanjeev Premi | f69eefd | 2011-02-15 10:57:31 +0000 | [diff] [blame] | 185 | * board_flash_init - Identify devices connected to GPMC and register. |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 186 | * |
| 187 | * @return - void. |
| 188 | */ |
Tony Lindgren | d1589f0 | 2012-02-20 09:43:30 -0800 | [diff] [blame] | 189 | void __init board_flash_init(struct flash_partitions partition_info[], |
Sukumar Ghorai | d5ce2b6 | 2011-01-28 15:42:03 +0530 | [diff] [blame] | 190 | char chip_sel_board[][GPMC_CS_NUM], int nand_type) |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 191 | { |
| 192 | u8 cs = 0; |
| 193 | u8 norcs = GPMC_CS_NUM + 1; |
| 194 | u8 nandcs = GPMC_CS_NUM + 1; |
| 195 | u8 onenandcs = GPMC_CS_NUM + 1; |
| 196 | u8 idx; |
| 197 | unsigned char *config_sel = NULL; |
| 198 | |
| 199 | /* REVISIT: Is this return correct idx for 2430 SDP? |
| 200 | * for which cs configuration matches for 2430 SDP? |
| 201 | */ |
| 202 | idx = get_gpmc0_type(); |
| 203 | if (idx >= MAX_SUPPORTED_GPMC_CONFIG) { |
Sanjeev Premi | adc5430 | 2011-02-15 10:57:32 +0000 | [diff] [blame] | 204 | pr_err("%s: Invalid chip select: %d\n", __func__, cs); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 205 | return; |
| 206 | } |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 207 | config_sel = (unsigned char *)(chip_sel_board[idx]); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 208 | |
| 209 | while (cs < GPMC_CS_NUM) { |
| 210 | switch (config_sel[cs]) { |
| 211 | case PDC_NOR: |
| 212 | if (norcs > GPMC_CS_NUM) |
| 213 | norcs = cs; |
| 214 | break; |
| 215 | case PDC_NAND: |
| 216 | if (nandcs > GPMC_CS_NUM) |
| 217 | nandcs = cs; |
| 218 | break; |
| 219 | case PDC_ONENAND: |
| 220 | if (onenandcs > GPMC_CS_NUM) |
| 221 | onenandcs = cs; |
| 222 | break; |
Peter Senna Tschudin | c09fcc43 | 2012-09-18 18:36:11 +0200 | [diff] [blame] | 223 | } |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 224 | cs++; |
| 225 | } |
| 226 | |
| 227 | if (norcs > GPMC_CS_NUM) |
Sanjeev Premi | adc5430 | 2011-02-15 10:57:32 +0000 | [diff] [blame] | 228 | pr_err("NOR: Unable to find configuration in GPMC\n"); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 229 | else |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 230 | board_nor_init(partition_info[0].parts, |
| 231 | partition_info[0].nr_parts, norcs); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 232 | |
| 233 | if (onenandcs > GPMC_CS_NUM) |
Sanjeev Premi | adc5430 | 2011-02-15 10:57:32 +0000 | [diff] [blame] | 234 | pr_err("OneNAND: Unable to find configuration in GPMC\n"); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 235 | else |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 236 | board_onenand_init(partition_info[1].parts, |
| 237 | partition_info[1].nr_parts, onenandcs); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 238 | |
| 239 | if (nandcs > GPMC_CS_NUM) |
Sanjeev Premi | adc5430 | 2011-02-15 10:57:32 +0000 | [diff] [blame] | 240 | pr_err("NAND: Unable to find configuration in GPMC\n"); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 241 | else |
Sukumar Ghorai | 13d6b73c | 2010-07-09 14:27:47 +0000 | [diff] [blame] | 242 | board_nand_init(partition_info[2].parts, |
Afzal Mohammed | 2e61826 | 2012-02-29 18:11:56 +0530 | [diff] [blame] | 243 | partition_info[2].nr_parts, nandcs, |
| 244 | nand_type, nand_default_timings); |
Vimal Singh | c2798e9 | 2010-02-15 10:03:33 -0800 | [diff] [blame] | 245 | } |