mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 23:42:43 +00:00
144 lines
3.2 KiB
Diff
144 lines
3.2 KiB
Diff
--- 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;
|
|
@@ -50,9 +51,6 @@ static void early_nvram_init(void)
|
|
#ifdef CONFIG_BCM47XX_BCMA
|
|
case BCM47XX_BUS_TYPE_BCMA:
|
|
bcma_cc = &bcm47xx_bus.bcma.bus.drv_cc;
|
|
- if (bcma_cc->flash_type != BCMA_PFLASH)
|
|
- return;
|
|
-
|
|
base = bcma_cc->pflash.window;
|
|
lim = bcma_cc->pflash.window_size;
|
|
break;
|
|
@@ -86,7 +84,115 @@ 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 find_nvram_size(void)
|
|
+{
|
|
+ struct nvram_header header;
|
|
+ int nvram_sizes[] = {NVRAM_SPACE, 0xF000, 2 * NVRAM_SPACE};
|
|
+ int i;
|
|
+ int ret;
|
|
+
|
|
+ for (i = 0; i < sizeof(nvram_sizes); i++) {
|
|
+ ret = bcm47xx_sflash.read(&bcm47xx_sflash, bcm47xx_sflash.size - nvram_sizes[i], sizeof(header), (u8 *)&header);
|
|
+ if (ret != sizeof(header))
|
|
+ return ret;
|
|
+ if (header.magic == NVRAM_HEADER)
|
|
+ return nvram_sizes[i];
|
|
+ }
|
|
+ return -1;
|
|
+}
|
|
+
|
|
+static int early_nvram_init_sflash(void)
|
|
+{
|
|
+ u32 off;
|
|
+ int ret;
|
|
+ char *dst;
|
|
+ int len;
|
|
+ int size;
|
|
+
|
|
+ /* check if the struct is already initilized */
|
|
+ if (!bcm47xx_sflash.size)
|
|
+ return -1;
|
|
+
|
|
+ size = find_nvram_size();
|
|
+ if (size <= 0)
|
|
+ return size;
|
|
+
|
|
+ len = NVRAM_SPACE;
|
|
+ dst = nvram_buf;
|
|
+ off = bcm47xx_sflash.size;
|
|
+ if (size > len) {
|
|
+ printk(KERN_WARNING "nvram on flash is bigger than the reserved"
|
|
+ " space in memory, will just copy the first %i bytes\n",
|
|
+ len);
|
|
+ }
|
|
+ while (len) {
|
|
+ ret = bcm47xx_sflash.read(&bcm47xx_sflash, off - size, len, dst);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+ off += ret;
|
|
+ len -= ret;
|
|
+ dst += ret;
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#ifdef CONFIG_BCM47XX_SSB
|
|
+static void early_nvram_init_ssb(void)
|
|
+{
|
|
+ int err;
|
|
+
|
|
+ switch (bcm47xx_bus.ssb.chipco.flash_type) {
|
|
+ case SSB_PFLASH:
|
|
+ early_nvram_init_pflash();
|
|
+ break;
|
|
+ case SSB_SFLASH:
|
|
+ err = early_nvram_init_sflash();
|
|
+ if (err < 0)
|
|
+ printk(KERN_WARNING "can not read from flash: %i\n", err);
|
|
+ break;
|
|
+ default:
|
|
+ printk(KERN_WARNING "unknow flash type\n");
|
|
+ }
|
|
+}
|
|
+#endif
|
|
+
|
|
+#ifdef CONFIG_BCM47XX_BCMA
|
|
+static void early_nvram_init_bcma(void)
|
|
+{
|
|
+ int err;
|
|
+
|
|
+ switch (bcm47xx_bus.bcma.bus.drv_cc.flash_type) {
|
|
+ case BCMA_PFLASH:
|
|
+ early_nvram_init_pflash();
|
|
+ break;
|
|
+ case BCMA_SFLASH:
|
|
+ err = early_nvram_init_sflash();
|
|
+ if (err < 0)
|
|
+ printk(KERN_WARNING "can not read from flash: %i\n", err);
|
|
+ break;
|
|
+ default:
|
|
+ printk(KERN_WARNING "unknow flash type\n");
|
|
+ }
|
|
+}
|
|
+#endif
|
|
+
|
|
+static void early_nvram_init(void)
|
|
+{
|
|
+ switch (bcm47xx_bus_type) {
|
|
+#ifdef CONFIG_BCM47XX_SSB
|
|
+ case BCM47XX_BUS_TYPE_SSB:
|
|
+ early_nvram_init_ssb();
|
|
+ break;
|
|
+#endif
|
|
+#ifdef CONFIG_BCM47XX_BCMA
|
|
+ case BCM47XX_BUS_TYPE_BCMA:
|
|
+ early_nvram_init_bcma();
|
|
+ break;
|
|
+#endif
|
|
+ }
|
|
}
|
|
|
|
int nvram_getenv(char *name, char *val, size_t val_len)
|