>From e586d2fbbecc60bc66687c4e6d4798913bb33b7a Mon Sep 17 00:00:00 2001
From: Vimal Singh
Date: Mon, 8 Feb 2010 05:02:45 +0530
Subject: [PATCH 2/3] OMAP: SDP: Introducing 'board-sdp-flash.c' for flash init
This patch adds 'board-sdp-flash.c', which could be utilized
by boards similar to 3430SDP. (For ex: 2430sdp, 36030sdp).
This file does initialization for all three flash devices present
in SDP boards (NOR, NAND, OneNAND), by finding there 'cs' number
dynamically using switch setting information (S8: 1-4).
This also expects partition information from core board files (for
ex: board-3430sdp.c). Which allows to choose different default
partitions for different boards.
A new structure is created for this purpose: 'flash_partitions'
in 'mach/board-sdp.h'. This has two members:
1. struct mtd_partition *parts
2. int nr_parts
A board file is expected to fill this structure and pass it to
'sdp-flsash-init'. Partition information should be passed in
structure array of 'flash_partitions'. Partition information should
be passed in below sequence in array:
NOR
OneNAND
NAND
Signed-off-by: Vimal Singh
---
arch/arm/mach-omap2/board-sdp-flash.c| 295 ++
arch/arm/mach-omap2/include/mach/board-sdp.h | 22 ++
arch/arm/plat-omap/include/plat/gpmc.h |2 +
3 files changed, 319 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-omap2/board-sdp-flash.c
create mode 100644 arch/arm/mach-omap2/include/mach/board-sdp.h
diff --git a/arch/arm/mach-omap2/board-sdp-flash.c
b/arch/arm/mach-omap2/board-sdp-flash.c
new file mode 100644
index 000..54ef19f
--- /dev/null
+++ b/arch/arm/mach-omap2/board-sdp-flash.c
@@ -0,0 +1,295 @@
+/*
+ * board-sdp-flash.c
+ * Modified from mach-omap2/board-3430sdp-flash.c
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments
+ *
+ * Vimal Singh
+ *
+ * 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
+#include
+#include
+#include
+
+#include
+#include
+#include
+#include
+#include
+
+#define REG_FPGA_REV 0x10
+#define REG_FPGA_DIP_SWITCH_INPUT2 0x60
+#define MAX_SUPPORTED_GPMC_CONFIG 3
+
+#define DEBUG_BASE 0x0800 /* debug board */
+
+#define PDC_NOR1
+#define PDC_NAND 2
+#define PDC_ONENAND3
+#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: */
+ {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 void omap_set_vpp(struct map_info *map, int enable)
+{
+ static int count;
+ u32 l;
+
+ if (cpu_class_is_omap1()) {
+ if (enable) {
+ if (count++ == 0) {
+ l = omap_readl(EMIFS_CONFIG);
+ l |= OMAP_EMIFS_CONFIG_WP;
+ omap_writel(l, EMIFS_CONFIG);
+ }
+ } else {
+ if (count && (--count == 0)) {
+ l = omap_readl(EMIFS_CONFIG);
+ l &= ~OMAP_EMIFS_CONFIG_WP;
+ omap_writel(l, EMIFS_CONFIG);
+ }
+ }
+ }
+}
+
+static struct physmap_flash_data sdp_nor_data = {
+ .width = 2,
+ .set_vpp= omap_set_vpp,
+};
+
+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
+
