Hello,
the following patch (against current kernel.org tree) adds MTD
support for the NOR and NAND flashes on the PPChameleon modules /
eval boards manufactured by DAVE s.r.l.
[PATCH] MTD: Add support for DAVE PPChameleon board.
Included support for the NOR and NAND flashes on the module, and for
the NAND flash on the eval board.
Note: on my system, all sectors of the NAND flash on the eval board
get flagged as bad, while there are actually only 5 bad sectors on
this device. This needs more investigation,
Signed-off-by: Wolfgang Denk wd at denx.de
---
commit 1fe4ae42778972c8065e5aaa1e807571798c57e8
tree 80ae5bb762dd29bb82d39f7bdd69ed7951aee629
parent c9759e3e50c6e0f7c935a0f84f6c811e0bc3bc84
author Wolfgang Denk wd at pollux.denx.de Wed, 12 Oct 2005 17:42:18 +0200
committer Wolfgang Denk wd at pollux.denx.de Wed, 12 Oct 2005 17:42:18 +0200
drivers/mtd/maps/Kconfig |8 +++
drivers/mtd/maps/Makefile |1
drivers/mtd/maps/ppchameleon.c| 109 +
drivers/mtd/nand/Kconfig |6 +-
drivers/mtd/nand/ppchameleonevb.c | 55 +--
5 files changed, 147 insertions(+), 32 deletions(-)
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -356,6 +356,14 @@ config MTD_REDWOOD
Redwood board. If you have one of these boards and would like to
use the flash chips on it, say 'Y'.
+config MTD_PPCHAMELEON
+ tristate Flash device mapped on DAVE PPChamelonEVB Boards
+ depends on MTD_CFI PPC32 40x PPChameleonEVB
+ help
+ This enables access routines for the flash chips on the
+ DAVE PPChamelonEVB board. If you have one of these boardsr
+ and would like to use the flash chips on it, say 'Y'.
+
config MTD_UBOOT_PARTITIONS
bool Use U-Boot partition setup
depends on MTD_WALNUT || MTD_EBONY || MTD_OCOTEA || MTD_BAMBOO
diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile
--- a/drivers/mtd/maps/Makefile
+++ b/drivers/mtd/maps/Makefile
@@ -72,3 +72,4 @@ obj-$(CONFIG_MTD_DMV182) += dmv182.o
obj-$(CONFIG_MTD_SHARP_SL) += sharpsl-flash.o
obj-$(CONFIG_MTD_PLATRAM) += plat-ram.o
obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o
+obj-$(CONFIG_MTD_PPCHAMELEON) += ppchameleon.o
diff --git a/drivers/mtd/maps/ppchameleon.c b/drivers/mtd/maps/ppchameleon.c
new file mode 100644
--- /dev/null
+++ b/drivers/mtd/maps/ppchameleon.c
@@ -0,0 +1,109 @@
+/*
+ * drivers/mtd/maps/ppchameleon.c
+ *
+ * Mapping for DAVE PPChamelonEVB flash
+ *
+ * Maintained by Wolfgang Denk, wd at denx.de
+ *
+ * Copyright (c) 2005 DENX Software Engineering
+ * Wolfgang Denk wd at denx.de
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include linux/module.h
+#include linux/types.h
+#include linux/kernel.h
+#include linux/init.h
+#include linux/mtd/mtd.h
+#include linux/mtd/map.h
+#include linux/mtd/partitions.h
+#include linux/config.h
+#include linux/version.h
+#include asm/io.h
+#include asm/ibm4xx.h
+#include asm/ppcboot.h
+
+extern bd_t __res;
+
+static struct mtd_info *flash;
+
+static struct map_info ppchameleon_map = {
+ .name = PPChameleon,
+ .bankwidth =2,
+};
+
+static struct mtd_partition ppchameleon_partitions[] = {
+{
+ name: linux,/* Linux kernel image */
+ offset: 0x,
+ size: 0x0018,
+/* mask_flags: MTD_WRITEABLE, / * force read-only */
+},
+{
+ name: user, /* unassigned */
+ offset: 0x0018,
+ size: 0x0024,
+},
+{
+ name: u-boot, /* U-Boot Firmware */
+ offset: 0x003C,
+ size: 0x0004, /* 256 KB */
+/* mask_flags: MTD_WRITEABLE, / * force read-only */
+},
+};
+
+int __init init_ppchameleon(void)
+{
+ unsigned long flash_base, flash_size;
+
+ flash_base = __res.bi_flashstart;
+ flash_size = __res.bi_flashsize;
+
+ ppchameleon_map.size = flash_size;
+ ppchameleon_map.phys = flash_base;
+ ppchameleon_map.virt =
+ (void __iomem *)ioremap(flash_base, ppchameleon_map.size);
+
+ if (!ppchameleon_map.virt) {
+ printk(Failed to ioremap flash.\n);
+ return -EIO;
+ }
+
+ simple_map_init(ppchameleon_map);
+
+ flash = do_map_probe(cfi_probe, ppchameleon_map);
+ if (flash) {
+ flash-owner = THIS_MODULE;
+ add_mtd_partitions(flash, ppchameleon_partitions,
+ ARRAY_SIZE(ppchameleon_partitions));
+ } else {
+
