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|
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -251,6 +251,12 @@
help
Support for flash chips on NETtel/SecureEdge/SnapGear boards.
+config MTD_LANTIQ
+ bool "Lantiq SoC NOR support"
+ depends on LANTIQ && MTD_PARTITIONS
+ help
+ Support for NOR flsh chips on Lantiq SoC
+
config MTD_DILNETPC
tristate "CFI Flash device mapped on DIL/Net PC"
depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT && BROKEN
--- a/drivers/mtd/maps/Makefile
+++ b/drivers/mtd/maps/Makefile
@@ -59,3 +59,4 @@
obj-$(CONFIG_MTD_RBTX4939) += rbtx4939-flash.o
obj-$(CONFIG_MTD_VMU) += vmu-flash.o
obj-$(CONFIG_MTD_GPIO_ADDR) += gpio-addr-flash.o
+obj-$(CONFIG_MTD_LANTIQ) += lantiq.o
--- /dev/null
+++ b/drivers/mtd/maps/lantiq.c
@@ -0,0 +1,169 @@
+/*
+ * 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.
+ *
+ * Copyright (C) 2004 Liu Peng Infineon IFAP DC COM CPE
+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/cfi.h>
+#include <linux/magic.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+
+#include <lantiq.h>
+#include <lantiq_platform.h>
+
+static map_word
+lq_read16(struct map_info *map, unsigned long adr)
+{
+ unsigned long flags;
+ map_word temp;
+ spin_lock_irqsave(&ebu_lock, flags);
+ adr ^= 2;
+ temp.x[0] = *((__u16 *)(map->virt + adr));
+ spin_unlock_irqrestore(&ebu_lock, flags);
+ return temp;
+}
+
+static void
+lq_write16(struct map_info *map, map_word d, unsigned long adr)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&ebu_lock, flags);
+ adr ^= 2;
+ *((__u16 *)(map->virt + adr)) = d.x[0];
+ spin_unlock_irqrestore(&ebu_lock, flags);
+}
+
+void
+lq_copy_from(struct map_info *map, void *to,
+ unsigned long from, ssize_t len)
+{
+ unsigned char *p;
+ unsigned char *to_8;
+ unsigned long flags;
+ spin_lock_irqsave(&ebu_lock, flags);
+ from = (unsigned long)(from + map->virt);
+ p = (unsigned char *) from;
+ to_8 = (unsigned char *) to;
+ while (len--)
+ *to_8++ = *p++;
+ spin_unlock_irqrestore(&ebu_lock, flags);
+}
+
+void
+lq_copy_to(struct map_info *map, unsigned long to,
+ const void *from, ssize_t len)
+{
+ unsigned char *p = (unsigned char *)from;
+ unsigned char *to_8;
+ unsigned long flags;
+ spin_lock_irqsave(&ebu_lock, flags);
+ to += (unsigned long) map->virt;
+ to_8 = (unsigned char *)to;
+ while (len--)
+ *p++ = *to_8++;
+ spin_unlock_irqrestore(&ebu_lock, flags);
+}
+
+static const char *part_probe_types[] = { "cmdlinepart", NULL };
+
+static struct map_info lq_map = {
+ .name = "lq_nor",
+ .bankwidth = 2,
+ .read = lq_read16,
+ .write = lq_write16,
+ .copy_from = lq_copy_from,
+ .copy_to = lq_copy_to,
+};
+
+static int
+lq_mtd_probe(struct platform_device *pdev)
+{
+ struct physmap_flash_data *lq_mtd_data =
+ (struct physmap_flash_data*) dev_get_platdata(&pdev->dev);
+ struct mtd_info *lq_mtd = NULL;
+ struct mtd_partition *parts = NULL;
+ struct resource *res = 0;
+ int nr_parts = 0;
+
+#ifdef CONFIG_SOC_LANTIQ_XWAY
+ lq_w32(lq_r32(LQ_EBU_BUSCON0) & ~EBU_WRDIS, LQ_EBU_BUSCON0);
+#endif
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if(!res)
+ {
+ dev_err(&pdev->dev, "failed to get memory resource");
+ return -ENOENT;
+ }
+ res = request_mem_region(res->start, resource_size(res),
+ dev_name(&pdev->dev));
+ if(!res)
+ {
+ dev_err(&pdev->dev, "failed to request mem resource");
+ return -EBUSY;
+ }
+
+ lq_map.phys = res->start;
+ lq_map.size = resource_size(res);
+ lq_map.virt = ioremap_nocache(lq_map.phys, lq_map.size);
+
+ if (!lq_map.virt ) {
+ dev_err(&pdev->dev, "failed to ioremap!\n");
+ return -EIO;
+ }
+
+ lq_mtd = (struct mtd_info *) do_map_probe("cfi_probe", &lq_map);
+ if (!lq_mtd) {
+ iounmap(lq_map.virt);
+ dev_err(&pdev->dev, "probing failed\n");
+ return -ENXIO;
+ }
+
+ lq_mtd->owner = THIS_MODULE;
+
+ nr_parts = parse_mtd_partitions(lq_mtd, part_probe_types, &parts, 0);
+ if (nr_parts > 0) {
+ dev_info(&pdev->dev, "using %d partitions from cmdline", nr_parts);
+ } else {
+ nr_parts = lq_mtd_data->nr_parts;
+ parts = lq_mtd_data->parts;
+ }
+
+ add_mtd_partitions(lq_mtd, parts, nr_parts);
+ return 0;
+}
+
+static struct platform_driver lq_mtd_driver = {
+ .probe = lq_mtd_probe,
+ .driver = {
+ .name = "lq_nor",
+ .owner = THIS_MODULE,
+ },
+};
+
+int __init
+init_lq_mtd(void)
+{
+ int ret = platform_driver_register(&lq_mtd_driver);
+ if (ret)
+ printk(KERN_INFO "lq_nor: error registering platfom driver");
+ return ret;
+}
+
+module_init(init_lq_mtd);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
+MODULE_DESCRIPTION("Lantiq SoC NOR");
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -41,7 +41,11 @@
/* #define CMDSET0001_DISABLE_WRITE_SUSPEND */
// debugging, turns off buffer write mode if set to 1
-#define FORCE_WORD_WRITE 0
+#ifdef CONFIG_LANTIQ
+# define FORCE_WORD_WRITE 1
+#else
+# define FORCE_WORD_WRITE 0
+#endif
/* Intel chips */
#define I82802AB 0x00ad
@@ -1491,6 +1495,9 @@
int ret=0;
adr += chip->start;
+#ifdef CONFIG_LANTIQ
+ adr ^= 2;
+#endif
switch (mode) {
case FL_WRITING:
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -40,7 +40,11 @@
#include <linux/mtd/xip.h>
#define AMD_BOOTLOC_BUG
-#define FORCE_WORD_WRITE 0
+#ifdef CONFIG_LANTIQ
+# define FORCE_WORD_WRITE 1
+#else
+# define FORCE_WORD_WRITE 0
+#endif
#define MAX_WORD_RETRIES 3
@@ -1156,6 +1160,10 @@
adr += chip->start;
+#ifdef CONFIG_LANTIQ
+ adr ^= 2;
+#endif
+
mutex_lock(&chip->mutex);
ret = get_chip(map, chip, adr, FL_WRITING);
if (ret) {
|
