diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.2/0025-bcm47xx-read-nvram-from-sflash.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.2/0025-bcm47xx-read-nvram-from-sflash.patch | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.2/0025-bcm47xx-read-nvram-from-sflash.patch b/target/linux/brcm47xx/patches-3.2/0025-bcm47xx-read-nvram-from-sflash.patch new file mode 100644 index 000000000..d3781b8fe --- /dev/null +++ b/target/linux/brcm47xx/patches-3.2/0025-bcm47xx-read-nvram-from-sflash.patch @@ -0,0 +1,118 @@ +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) |