+++ /dev/null
-/*
- * board-sdp-flash.c
- * Modified from mach-omap2/board-3430sdp-flash.c
- *
- * Copyright (C) 2009 Nokia Corporation
- * Copyright (C) 2009 Texas Instruments
- *
- * Vimal Singh <vimalsingh@ti.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/mtd/physmap.h>
-#include <linux/io.h>
-
-#include <plat/gpmc.h>
-#include <plat/nand.h>
-#include <plat/onenand.h>
-#include <plat/tc.h>
-#include <mach/board-sdp.h>
-
-#define REG_FPGA_REV 0x10
-#define REG_FPGA_DIP_SWITCH_INPUT2 0x60
-#define MAX_SUPPORTED_GPMC_CONFIG 3
-
-#define DEBUG_BASE 0x08000000 /* debug board */
-
-#define PDC_NOR 1
-#define PDC_NAND 2
-#define PDC_ONENAND 3
-#define DBG_MPDB 4
-
-/* various memory sizes */
-#define FLASH_SIZE_SDPV1 SZ_64M /* NOR flash (64 Meg aligned) */
-#define FLASH_SIZE_SDPV2 SZ_128M /* NOR flash (256 Meg aligned) */
-
-/*
- * SDP3430 V2 Board CS organization
- * Different from SDP3430 V1. Now 4 switches used to specify CS
- *
- * See also the Switch S8 settings in the comments.
- *
- * REVISIT: Add support for 2430 SDP
- */
-static const unsigned char chip_sel_sdp[][GPMC_CS_NUM] = {
- {PDC_NOR, PDC_NAND, PDC_ONENAND, DBG_MPDB, 0, 0, 0, 0}, /* S8:1111 */
- {PDC_ONENAND, PDC_NAND, PDC_NOR, DBG_MPDB, 0, 0, 0, 0}, /* S8:1110 */
- {PDC_NAND, PDC_ONENAND, PDC_NOR, DBG_MPDB, 0, 0, 0, 0}, /* S8:1101 */
-};
-
-static struct physmap_flash_data sdp_nor_data = {
- .width = 2,
-};
-
-static struct resource sdp_nor_resource = {
- .flags = IORESOURCE_MEM,
-};
-
-static struct platform_device sdp_nor_device = {
- .name = "physmap-flash",
- .id = 0,
- .dev = {
- .platform_data = &sdp_nor_data,
- },
- .num_resources = 1,
- .resource = &sdp_nor_resource,
-};
-
-static void
-__init board_nor_init(struct flash_partitions sdp_nor_parts, u8 cs)
-{
- int err;
-
- sdp_nor_data.parts = sdp_nor_parts.parts;
- sdp_nor_data.nr_parts = sdp_nor_parts.nr_parts;
-
- /* Configure start address and size of NOR device */
- if (omap_rev() >= OMAP3430_REV_ES1_0) {
- err = gpmc_cs_request(cs, FLASH_SIZE_SDPV2 - 1,
- (unsigned long *)&sdp_nor_resource.start);
- sdp_nor_resource.end = sdp_nor_resource.start
- + FLASH_SIZE_SDPV2 - 1;
- } else {
- err = gpmc_cs_request(cs, FLASH_SIZE_SDPV1 - 1,
- (unsigned long *)&sdp_nor_resource.start);
- sdp_nor_resource.end = sdp_nor_resource.start
- + FLASH_SIZE_SDPV1 - 1;
- }
- if (err < 0) {
- printk(KERN_ERR "NOR: Can't request GPMC CS\n");
- return;
- }
- if (platform_device_register(&sdp_nor_device) < 0)
- printk(KERN_ERR "Unable to register NOR device\n");
-}
-
-#if defined(CONFIG_MTD_ONENAND_OMAP2) || \
- defined(CONFIG_MTD_ONENAND_OMAP2_MODULE)
-static struct omap_onenand_platform_data board_onenand_data = {
- .dma_channel = -1, /* disable DMA in OMAP OneNAND driver */
-};
-
-static void
-__init board_onenand_init(struct flash_partitions sdp_onenand_parts, u8 cs)
-{
- board_onenand_data.cs = cs;
- board_onenand_data.parts = sdp_onenand_parts.parts;
- board_onenand_data.nr_parts = sdp_onenand_parts.nr_parts;
-
- gpmc_onenand_init(&board_onenand_data);
-}
-#else
-static void
-__init board_onenand_init(struct flash_partitions sdp_onenand_parts, u8 cs)
-{
-}
-#endif /* CONFIG_MTD_ONENAND_OMAP2 || CONFIG_MTD_ONENAND_OMAP2_MODULE */
-
-#if defined(CONFIG_MTD_NAND_OMAP2) || \
- defined(CONFIG_MTD_NAND_OMAP2_MODULE)
-
-/* Note that all values in this struct are in nanoseconds */
-static struct gpmc_timings nand_timings = {
-
- .sync_clk = 0,
-
- .cs_on = 0,
- .cs_rd_off = 36,
- .cs_wr_off = 36,
-
- .adv_on = 6,
- .adv_rd_off = 24,
- .adv_wr_off = 36,
-
- .we_off = 30,
- .oe_off = 48,
-
- .access = 54,
- .rd_cycle = 72,
- .wr_cycle = 72,
-
- .wr_access = 30,
- .wr_data_mux_bus = 0,
-};
-
-static struct omap_nand_platform_data sdp_nand_data = {
- .nand_setup = NULL,
- .gpmc_t = &nand_timings,
- .dma_channel = -1, /* disable DMA in OMAP NAND driver */
- .dev_ready = NULL,
- .devsize = 0, /* '0' for 8-bit, '1' for 16-bit device */
-};
-
-static void
-__init board_nand_init(struct flash_partitions sdp_nand_parts, u8 cs)
-{
- sdp_nand_data.cs = cs;
- sdp_nand_data.parts = sdp_nand_parts.parts;
- sdp_nand_data.nr_parts = sdp_nand_parts.nr_parts;
-
- gpmc_nand_init(&sdp_nand_data);
-}
-#else
-static void
-__init board_nand_init(struct flash_partitions sdp_nand_parts, u8 cs)
-{
-}
-#endif /* CONFIG_MTD_NAND_OMAP2 || CONFIG_MTD_NAND_OMAP2_MODULE */
-
-/**
- * get_gpmc0_type - Reads the FPGA DIP_SWITCH_INPUT_REGISTER2 to get
- * the various cs values.
- */
-static u8 get_gpmc0_type(void)
-{
- u8 cs = 0;
- void __iomem *fpga_map_addr;
-
- fpga_map_addr = ioremap(DEBUG_BASE, 4096);
- if (!fpga_map_addr)
- return -ENOMEM;
-
- if (!(__raw_readw(fpga_map_addr + REG_FPGA_REV)))
- /* we dont have an DEBUG FPGA??? */
- /* Depend on #defines!! default to strata boot return param */
- goto unmap;
-
- /* S8-DIP-OFF = 1, S8-DIP-ON = 0 */
- cs = __raw_readw(fpga_map_addr + REG_FPGA_DIP_SWITCH_INPUT2) & 0xf;
-
- /* ES2.0 SDP's onwards 4 dip switches are provided for CS */
- if (omap_rev() >= OMAP3430_REV_ES1_0)
- /* change (S8-1:4=DS-2:0) to (S8-4:1=DS-2:0) */
- cs = ((cs & 8) >> 3) | ((cs & 4) >> 1) |
- ((cs & 2) << 1) | ((cs & 1) << 3);
- else
- /* change (S8-1:3=DS-2:0) to (S8-3:1=DS-2:0) */
- cs = ((cs & 4) >> 2) | (cs & 2) | ((cs & 1) << 2);
-unmap:
- iounmap(fpga_map_addr);
- return cs;
-}
-
-/**
- * sdp3430_flash_init - Identify devices connected to GPMC and register.
- *
- * @return - void.
- */
-void __init sdp_flash_init(struct flash_partitions sdp_partition_info[])
-{
- u8 cs = 0;
- u8 norcs = GPMC_CS_NUM + 1;
- u8 nandcs = GPMC_CS_NUM + 1;
- u8 onenandcs = GPMC_CS_NUM + 1;
- u8 idx;
- unsigned char *config_sel = NULL;
-
- /* REVISIT: Is this return correct idx for 2430 SDP?
- * for which cs configuration matches for 2430 SDP?
- */
- idx = get_gpmc0_type();
- if (idx >= MAX_SUPPORTED_GPMC_CONFIG) {
- printk(KERN_ERR "%s: Invalid chip select: %d\n", __func__, cs);
- return;
- }
- config_sel = (unsigned char *)(chip_sel_sdp[idx]);
-
- while (cs < GPMC_CS_NUM) {
- switch (config_sel[cs]) {
- case PDC_NOR:
- if (norcs > GPMC_CS_NUM)
- norcs = cs;
- break;
- case PDC_NAND:
- if (nandcs > GPMC_CS_NUM)
- nandcs = cs;
- break;
- case PDC_ONENAND:
- if (onenandcs > GPMC_CS_NUM)
- onenandcs = cs;
- break;
- };
- cs++;
- }
-
- if (norcs > GPMC_CS_NUM)
- printk(KERN_INFO "NOR: Unable to find configuration "
- "in GPMC\n");
- else
- board_nor_init(sdp_partition_info[0], norcs);
-
- if (onenandcs > GPMC_CS_NUM)
- printk(KERN_INFO "OneNAND: Unable to find configuration "
- "in GPMC\n");
- else
- board_onenand_init(sdp_partition_info[1], onenandcs);
-
- if (nandcs > GPMC_CS_NUM)
- printk(KERN_INFO "NAND: Unable to find configuration "
- "in GPMC\n");
- else
- board_nand_init(sdp_partition_info[2], nandcs);
-}
git.openpandora.org / pandora-kernel.git / blobdiff