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Vimal Singhc2798e92010-02-15 10:03:33 -08001/*
Sanjeev Premif69eefd2011-02-15 10:57:31 +00002 * board-flash.c
Vimal Singhc2798e92010-02-15 10:03:33 -08003 * 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
Tony Lindgren7d7e1eb2012-08-27 17:43:01 -070020#include <plat/cpu.h>
Afzal Mohammed3ef5d002012-10-05 10:37:27 +053021#include "gpmc.h"
Arnd Bergmann22037472012-08-24 15:21:06 +020022#include <linux/platform_data/mtd-nand-omap2.h>
23#include <linux/platform_data/mtd-onenand-omap2.h>
Manjunath Kondaiah G04aeae72010-10-08 09:58:35 -070024
Tony Lindgrendbc04162012-08-31 10:59:07 -070025#include "common.h"
Manjunath Kondaiah G04aeae72010-10-08 09:58:35 -070026#include "board-flash.h"
Afzal Mohammedb6ab13e2012-09-29 10:32:42 +053027#include "gpmc-onenand.h"
Afzal Mohammedbc3668e2012-09-29 12:26:13 +053028#include "gpmc-nand.h"
Vimal Singhc2798e92010-02-15 10:03:33 -080029
30#define REG_FPGA_REV 0x10
31#define REG_FPGA_DIP_SWITCH_INPUT2 0x60
32#define MAX_SUPPORTED_GPMC_CONFIG 3
33
34#define DEBUG_BASE 0x08000000 /* debug board */
35
Vimal Singhc2798e92010-02-15 10:03:33 -080036/* various memory sizes */
37#define FLASH_SIZE_SDPV1 SZ_64M /* NOR flash (64 Meg aligned) */
38#define FLASH_SIZE_SDPV2 SZ_128M /* NOR flash (256 Meg aligned) */
39
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +000040static struct physmap_flash_data board_nor_data = {
Vimal Singhc2798e92010-02-15 10:03:33 -080041 .width = 2,
42};
43
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +000044static struct resource board_nor_resource = {
Vimal Singhc2798e92010-02-15 10:03:33 -080045 .flags = IORESOURCE_MEM,
46};
47
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +000048static struct platform_device board_nor_device = {
Vimal Singhc2798e92010-02-15 10:03:33 -080049 .name = "physmap-flash",
50 .id = 0,
51 .dev = {
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +000052 .platform_data = &board_nor_data,
Vimal Singhc2798e92010-02-15 10:03:33 -080053 },
54 .num_resources = 1,
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +000055 .resource = &board_nor_resource,
Vimal Singhc2798e92010-02-15 10:03:33 -080056};
57
58static void
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +000059__init board_nor_init(struct mtd_partition *nor_parts, u8 nr_parts, u8 cs)
Vimal Singhc2798e92010-02-15 10:03:33 -080060{
61 int err;
62
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +000063 board_nor_data.parts = nor_parts;
64 board_nor_data.nr_parts = nr_parts;
Vimal Singhc2798e92010-02-15 10:03:33 -080065
66 /* Configure start address and size of NOR device */
67 if (omap_rev() >= OMAP3430_REV_ES1_0) {
68 err = gpmc_cs_request(cs, FLASH_SIZE_SDPV2 - 1,
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +000069 (unsigned long *)&board_nor_resource.start);
70 board_nor_resource.end = board_nor_resource.start
Vimal Singhc2798e92010-02-15 10:03:33 -080071 + FLASH_SIZE_SDPV2 - 1;
72 } else {
73 err = gpmc_cs_request(cs, FLASH_SIZE_SDPV1 - 1,
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +000074 (unsigned long *)&board_nor_resource.start);
75 board_nor_resource.end = board_nor_resource.start
Vimal Singhc2798e92010-02-15 10:03:33 -080076 + FLASH_SIZE_SDPV1 - 1;
77 }
78 if (err < 0) {
Sanjeev Premiadc54302011-02-15 10:57:32 +000079 pr_err("NOR: Can't request GPMC CS\n");
Vimal Singhc2798e92010-02-15 10:03:33 -080080 return;
81 }
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +000082 if (platform_device_register(&board_nor_device) < 0)
Sanjeev Premiadc54302011-02-15 10:57:32 +000083 pr_err("Unable to register NOR device\n");
Vimal Singhc2798e92010-02-15 10:03:33 -080084}
85
86#if defined(CONFIG_MTD_ONENAND_OMAP2) || \
87 defined(CONFIG_MTD_ONENAND_OMAP2_MODULE)
88static struct omap_onenand_platform_data board_onenand_data = {
89 .dma_channel = -1, /* disable DMA in OMAP OneNAND driver */
90};
91
Javier Martinez Canillas82595732012-05-09 14:19:14 -070092void
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +000093__init board_onenand_init(struct mtd_partition *onenand_parts,
94 u8 nr_parts, u8 cs)
Vimal Singhc2798e92010-02-15 10:03:33 -080095{
96 board_onenand_data.cs = cs;
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +000097 board_onenand_data.parts = onenand_parts;
98 board_onenand_data.nr_parts = nr_parts;
Vimal Singhc2798e92010-02-15 10:03:33 -080099
100 gpmc_onenand_init(&board_onenand_data);
101}
Vimal Singhc2798e92010-02-15 10:03:33 -0800102#endif /* CONFIG_MTD_ONENAND_OMAP2 || CONFIG_MTD_ONENAND_OMAP2_MODULE */
103
104#if defined(CONFIG_MTD_NAND_OMAP2) || \
105 defined(CONFIG_MTD_NAND_OMAP2_MODULE)
106
107/* Note that all values in this struct are in nanoseconds */
Afzal Mohammed2e618262012-02-29 18:11:56 +0530108struct gpmc_timings nand_default_timings[1] = {
109 {
110 .sync_clk = 0,
Vimal Singhc2798e92010-02-15 10:03:33 -0800111
Afzal Mohammed2e618262012-02-29 18:11:56 +0530112 .cs_on = 0,
113 .cs_rd_off = 36,
114 .cs_wr_off = 36,
Vimal Singhc2798e92010-02-15 10:03:33 -0800115
Afzal Mohammed2e618262012-02-29 18:11:56 +0530116 .adv_on = 6,
117 .adv_rd_off = 24,
118 .adv_wr_off = 36,
Vimal Singhc2798e92010-02-15 10:03:33 -0800119
Afzal Mohammed2e618262012-02-29 18:11:56 +0530120 .we_off = 30,
121 .oe_off = 48,
Vimal Singhc2798e92010-02-15 10:03:33 -0800122
Afzal Mohammed2e618262012-02-29 18:11:56 +0530123 .access = 54,
124 .rd_cycle = 72,
125 .wr_cycle = 72,
Vimal Singhc2798e92010-02-15 10:03:33 -0800126
Afzal Mohammed2e618262012-02-29 18:11:56 +0530127 .wr_access = 30,
128 .wr_data_mux_bus = 0,
129 },
Vimal Singhc2798e92010-02-15 10:03:33 -0800130};
131
Afzal Mohammed2e618262012-02-29 18:11:56 +0530132static struct omap_nand_platform_data board_nand_data;
Vimal Singhc2798e92010-02-15 10:03:33 -0800133
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +0000134void
Afzal Mohammed2e618262012-02-29 18:11:56 +0530135__init board_nand_init(struct mtd_partition *nand_parts, u8 nr_parts, u8 cs,
136 int nand_type, struct gpmc_timings *gpmc_t)
Vimal Singhc2798e92010-02-15 10:03:33 -0800137{
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +0000138 board_nand_data.cs = cs;
139 board_nand_data.parts = nand_parts;
Sukumar Ghoraid5ce2b62011-01-28 15:42:03 +0530140 board_nand_data.nr_parts = nr_parts;
141 board_nand_data.devsize = nand_type;
Vimal Singhc2798e92010-02-15 10:03:33 -0800142
Sukumar Ghoraif3d73f32011-01-28 15:42:08 +0530143 board_nand_data.ecc_opt = OMAP_ECC_HAMMING_CODE_DEFAULT;
Afzal Mohammedbc3668e2012-09-29 12:26:13 +0530144 gpmc_nand_init(&board_nand_data, gpmc_t);
Vimal Singhc2798e92010-02-15 10:03:33 -0800145}
Vimal Singhc2798e92010-02-15 10:03:33 -0800146#endif /* CONFIG_MTD_NAND_OMAP2 || CONFIG_MTD_NAND_OMAP2_MODULE */
147
148/**
149 * get_gpmc0_type - Reads the FPGA DIP_SWITCH_INPUT_REGISTER2 to get
150 * the various cs values.
151 */
152static u8 get_gpmc0_type(void)
153{
154 u8 cs = 0;
155 void __iomem *fpga_map_addr;
156
157 fpga_map_addr = ioremap(DEBUG_BASE, 4096);
158 if (!fpga_map_addr)
159 return -ENOMEM;
160
161 if (!(__raw_readw(fpga_map_addr + REG_FPGA_REV)))
162 /* we dont have an DEBUG FPGA??? */
163 /* Depend on #defines!! default to strata boot return param */
164 goto unmap;
165
166 /* S8-DIP-OFF = 1, S8-DIP-ON = 0 */
167 cs = __raw_readw(fpga_map_addr + REG_FPGA_DIP_SWITCH_INPUT2) & 0xf;
168
169 /* ES2.0 SDP's onwards 4 dip switches are provided for CS */
170 if (omap_rev() >= OMAP3430_REV_ES1_0)
171 /* change (S8-1:4=DS-2:0) to (S8-4:1=DS-2:0) */
172 cs = ((cs & 8) >> 3) | ((cs & 4) >> 1) |
173 ((cs & 2) << 1) | ((cs & 1) << 3);
174 else
175 /* change (S8-1:3=DS-2:0) to (S8-3:1=DS-2:0) */
176 cs = ((cs & 4) >> 2) | (cs & 2) | ((cs & 1) << 2);
177unmap:
178 iounmap(fpga_map_addr);
179 return cs;
180}
181
182/**
Sanjeev Premif69eefd2011-02-15 10:57:31 +0000183 * board_flash_init - Identify devices connected to GPMC and register.
Vimal Singhc2798e92010-02-15 10:03:33 -0800184 *
185 * @return - void.
186 */
Tony Lindgrend1589f02012-02-20 09:43:30 -0800187void __init board_flash_init(struct flash_partitions partition_info[],
Sukumar Ghoraid5ce2b62011-01-28 15:42:03 +0530188 char chip_sel_board[][GPMC_CS_NUM], int nand_type)
Vimal Singhc2798e92010-02-15 10:03:33 -0800189{
190 u8 cs = 0;
191 u8 norcs = GPMC_CS_NUM + 1;
192 u8 nandcs = GPMC_CS_NUM + 1;
193 u8 onenandcs = GPMC_CS_NUM + 1;
194 u8 idx;
195 unsigned char *config_sel = NULL;
196
197 /* REVISIT: Is this return correct idx for 2430 SDP?
198 * for which cs configuration matches for 2430 SDP?
199 */
200 idx = get_gpmc0_type();
201 if (idx >= MAX_SUPPORTED_GPMC_CONFIG) {
Sanjeev Premiadc54302011-02-15 10:57:32 +0000202 pr_err("%s: Invalid chip select: %d\n", __func__, cs);
Vimal Singhc2798e92010-02-15 10:03:33 -0800203 return;
204 }
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +0000205 config_sel = (unsigned char *)(chip_sel_board[idx]);
Vimal Singhc2798e92010-02-15 10:03:33 -0800206
207 while (cs < GPMC_CS_NUM) {
208 switch (config_sel[cs]) {
209 case PDC_NOR:
210 if (norcs > GPMC_CS_NUM)
211 norcs = cs;
212 break;
213 case PDC_NAND:
214 if (nandcs > GPMC_CS_NUM)
215 nandcs = cs;
216 break;
217 case PDC_ONENAND:
218 if (onenandcs > GPMC_CS_NUM)
219 onenandcs = cs;
220 break;
Peter Senna Tschudinc09fcc432012-09-18 18:36:11 +0200221 }
Vimal Singhc2798e92010-02-15 10:03:33 -0800222 cs++;
223 }
224
225 if (norcs > GPMC_CS_NUM)
Sanjeev Premiadc54302011-02-15 10:57:32 +0000226 pr_err("NOR: Unable to find configuration in GPMC\n");
Vimal Singhc2798e92010-02-15 10:03:33 -0800227 else
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +0000228 board_nor_init(partition_info[0].parts,
229 partition_info[0].nr_parts, norcs);
Vimal Singhc2798e92010-02-15 10:03:33 -0800230
231 if (onenandcs > GPMC_CS_NUM)
Sanjeev Premiadc54302011-02-15 10:57:32 +0000232 pr_err("OneNAND: Unable to find configuration in GPMC\n");
Vimal Singhc2798e92010-02-15 10:03:33 -0800233 else
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +0000234 board_onenand_init(partition_info[1].parts,
235 partition_info[1].nr_parts, onenandcs);
Vimal Singhc2798e92010-02-15 10:03:33 -0800236
237 if (nandcs > GPMC_CS_NUM)
Sanjeev Premiadc54302011-02-15 10:57:32 +0000238 pr_err("NAND: Unable to find configuration in GPMC\n");
Vimal Singhc2798e92010-02-15 10:03:33 -0800239 else
Sukumar Ghorai13d6b73c2010-07-09 14:27:47 +0000240 board_nand_init(partition_info[2].parts,
Afzal Mohammed2e618262012-02-29 18:11:56 +0530241 partition_info[2].nr_parts, nandcs,
242 nand_type, nand_default_timings);
Vimal Singhc2798e92010-02-15 10:03:33 -0800243}