mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-27 07:03:54 +02:00
bf183aeff8
* this adds sflash support for ssb devices * the flash is now a platform device * minor updates git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27902 3c298f89-4303-0410-b956-a3cf2f4a3e73
119 lines
3.0 KiB
Diff
119 lines
3.0 KiB
Diff
From 1d693b2c9d5943cbe938f879041b837cd004737f Mon Sep 17 00:00:00 2001
|
|
From: Hauke Mehrtens <hauke@hauke-m.de>
|
|
Date: Sat, 23 Jul 2011 18:29:38 +0200
|
|
Subject: [PATCH 25/26] bcm47xx: read nvram from sflash
|
|
|
|
bcm47xx: add sflash support to nvram
|
|
|
|
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
|
|
---
|
|
arch/mips/bcm47xx/nvram.c | 86 +++++++++++++++++++++++++++++++++++++++++++-
|
|
1 files changed, 84 insertions(+), 2 deletions(-)
|
|
|
|
--- a/arch/mips/bcm47xx/nvram.c
|
|
+++ b/arch/mips/bcm47xx/nvram.c
|
|
@@ -20,11 +20,12 @@
|
|
#include <asm/addrspace.h>
|
|
#include <asm/mach-bcm47xx/nvram.h>
|
|
#include <asm/mach-bcm47xx/bcm47xx.h>
|
|
+#include <asm/mach-bcm47xx/bus.h>
|
|
|
|
static char nvram_buf[NVRAM_SPACE];
|
|
|
|
/* Probe for NVRAM header */
|
|
-static void early_nvram_init(void)
|
|
+static void early_nvram_init_pflash(void)
|
|
{
|
|
#ifdef CONFIG_BCM47XX_SSB
|
|
struct ssb_chipcommon *ssb_cc;
|
|
@@ -86,7 +87,88 @@ found:
|
|
for (i = 0; i < sizeof(struct nvram_header); i += 4)
|
|
*dst++ = *src++;
|
|
for (; i < header->len && i < NVRAM_SPACE; i += 4)
|
|
- *dst++ = le32_to_cpu(*src++);
|
|
+ *dst++ = *src++;
|
|
+}
|
|
+
|
|
+static int early_nvram_init_sflash(void)
|
|
+{
|
|
+ struct nvram_header header;
|
|
+ u32 off;
|
|
+ int ret;
|
|
+ char *dst;
|
|
+ int len;
|
|
+
|
|
+ /* check if the struct is already initilized */
|
|
+ if (!bcm47xx_sflash.size)
|
|
+ return -1;
|
|
+
|
|
+ off = FLASH_MIN;
|
|
+ while (off <= bcm47xx_sflash.size) {
|
|
+ ret = bcm47xx_sflash.read(&bcm47xx_sflash, off - NVRAM_SPACE, sizeof(header), (u8 *)&header);
|
|
+ if (ret != sizeof(header))
|
|
+ return ret;
|
|
+ if (header.magic == NVRAM_HEADER)
|
|
+ goto found;
|
|
+ off <<= 1;
|
|
+ }
|
|
+
|
|
+ off = FLASH_MIN;
|
|
+ while (off <= bcm47xx_sflash.size) {
|
|
+ ret = bcm47xx_sflash.read(&bcm47xx_sflash, off - (2 * NVRAM_SPACE), sizeof(header), (u8 *)&header);
|
|
+ if (ret != sizeof(header))
|
|
+ return ret;
|
|
+ if (header.magic == NVRAM_HEADER)
|
|
+ goto found;
|
|
+ off <<= 1;
|
|
+ }
|
|
+ return -1;
|
|
+
|
|
+found:
|
|
+ len = NVRAM_SPACE;
|
|
+ dst = nvram_buf;
|
|
+ while (len) {
|
|
+ ret = bcm47xx_sflash.read(&bcm47xx_sflash, off - (2 * NVRAM_SPACE), len, dst);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+ off += ret;
|
|
+ len -= ret;
|
|
+ dst += ret;
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void early_nvram_init(void)
|
|
+{
|
|
+ int err = 0;
|
|
+
|
|
+ switch (bcm47xx_bus_type) {
|
|
+#ifdef CONFIG_BCM47XX_SSB
|
|
+ case BCM47XX_BUS_TYPE_SSB:
|
|
+ if (bcm47xx_bus.ssb.chipco.flash_type == SSB_PFLASH) {
|
|
+ early_nvram_init_pflash();
|
|
+ } else if (bcm47xx_bus.ssb.chipco.flash_type == SSB_SFLASH) {
|
|
+ err = early_nvram_init_sflash();
|
|
+ if (err < 0)
|
|
+ printk(KERN_WARNING "can not read from flash: %i\n", err);
|
|
+ } else {
|
|
+ printk(KERN_WARNING "unknow flash type\n");
|
|
+ }
|
|
+ break;
|
|
+#endif
|
|
+#ifdef CONFIG_BCM47XX_BCMA
|
|
+ case BCM47XX_BUS_TYPE_BCMA:
|
|
+ if (bcm47xx_bus.bcma.bus.drv_cc.flash_type == BCMA_PFLASH) {
|
|
+ early_nvram_init_pflash();
|
|
+ } else if (bcm47xx_bus.bcma.bus.drv_cc.flash_type == BCMA_SFLASH) {
|
|
+ err = early_nvram_init_sflash();
|
|
+ if (err < 0)
|
|
+ printk(KERN_WARNING "can not read from flash: %i\n", err);
|
|
+ } else {
|
|
+ printk(KERN_WARNING "unknow flash type\n");
|
|
+ }
|
|
+ break;
|
|
+#endif
|
|
+ }
|
|
}
|
|
|
|
int nvram_getenv(char *name, char *val, size_t val_len)
|