+++ /dev/null
---- a/arch/mips/bcm47xx/nvram.c
-+++ b/arch/mips/bcm47xx/nvram.c
-@@ -3,7 +3,7 @@
- *
- * Copyright (C) 2005 Broadcom Corporation
- * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
-- * Copyright (C) 2010-2011 Hauke Mehrtens <hauke@hauke-m.de>
-+ * Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.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
-@@ -23,69 +23,139 @@
-
- static char nvram_buf[NVRAM_SPACE];
-
-+static u32 find_nvram_size(u32 end)
-+{
-+ struct nvram_header *header;
-+ u32 nvram_sizes[] = {0x8000, 0xF000, 0x10000};
-+ int i;
-+
-+ for (i = 0; i < ARRAY_SIZE(nvram_sizes); i++) {
-+ header = (struct nvram_header *)KSEG1ADDR(end - nvram_sizes[i]);
-+ if (header->magic == NVRAM_HEADER)
-+ return nvram_sizes[i];
-+ }
-+
-+ return 0;
-+}
-+
- /* Probe for NVRAM header */
--static void early_nvram_init(void)
-+static void early_nvram_init_fill(u32 base, u32 lim)
- {
--#ifdef CONFIG_BCM47XX_SSB
-- struct ssb_mipscore *mcore_ssb;
--#endif
--#ifdef CONFIG_BCM47XX_BCMA
-- struct bcma_drv_cc *bcma_cc;
--#endif
- struct nvram_header *header;
- int i;
-- u32 base = 0;
-- u32 lim = 0;
- u32 off;
- u32 *src, *dst;
-+ u32 size;
-
-- switch (bcm47xx_bus_type) {
--#ifdef CONFIG_BCM47XX_SSB
-- case BCM47XX_BUS_TYPE_SSB:
-- mcore_ssb = &bcm47xx_bus.ssb.mipscore;
-- base = mcore_ssb->pflash.window;
-- lim = mcore_ssb->pflash.window_size;
-- break;
--#endif
--#ifdef CONFIG_BCM47XX_BCMA
-- case BCM47XX_BUS_TYPE_BCMA:
-- bcma_cc = &bcm47xx_bus.bcma.bus.drv_cc;
-- base = bcma_cc->pflash.window;
-- lim = bcma_cc->pflash.window_size;
-- break;
--#endif
-- }
--
-+ /* TODO: when nvram is on nand flash check for bad blocks first. */
- off = FLASH_MIN;
- while (off <= lim) {
- /* Windowed flash access */
-- header = (struct nvram_header *)
-- KSEG1ADDR(base + off - NVRAM_SPACE);
-- if (header->magic == NVRAM_HEADER)
-+ size = find_nvram_size(base + off);
-+ if (size) {
-+ header = (struct nvram_header *)KSEG1ADDR(base + off -
-+ size);
- goto found;
-+ }
- off <<= 1;
- }
-
- /* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
- header = (struct nvram_header *) KSEG1ADDR(base + 4096);
-- if (header->magic == NVRAM_HEADER)
-+ if (header->magic == NVRAM_HEADER) {
-+ size = NVRAM_SPACE;
- goto found;
-+ }
-
- header = (struct nvram_header *) KSEG1ADDR(base + 1024);
-- if (header->magic == NVRAM_HEADER)
-+ if (header->magic == NVRAM_HEADER) {
-+ size = NVRAM_SPACE;
- goto found;
-+ }
-
-+ pr_err("no nvram found\n");
- return;
-
- found:
-+
-+ if (header->len > size)
-+ pr_err("The nvram size accoridng to the header seems to be bigger than the partition on flash\n");
-+ if (header->len > NVRAM_SPACE)
-+ pr_err("nvram on flash (%i bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n",
-+ header->len, NVRAM_SPACE);
-+
- src = (u32 *) header;
- dst = (u32 *) nvram_buf;
- for (i = 0; i < sizeof(struct nvram_header); i += 4)
- *dst++ = *src++;
-- for (; i < header->len && i < NVRAM_SPACE; i += 4)
-+ for (; i < header->len && i < NVRAM_SPACE && i < size; i += 4)
- *dst++ = le32_to_cpu(*src++);
- }
-
-+#ifdef CONFIG_BCM47XX_BCMA
-+static void early_nvram_init_bcma(void)
-+{
-+ struct bcma_drv_cc *cc = &bcm47xx_bus.bcma.bus.drv_cc;
-+ u32 base = 0;
-+ u32 lim = 0;
-+
-+ if (cc->nflash.boot) {
-+ base = BCMA_SOC_FLASH1;
-+ lim = BCMA_SOC_FLASH1_SZ;
-+ } else if (cc->pflash.present) {
-+ base = cc->pflash.window;
-+ lim = cc->pflash.window_size;
-+ } else if (cc->sflash.present) {
-+ base = cc->sflash.window;
-+ lim = cc->sflash.size;
-+ } else {
-+ pr_err("No supported flash found\n");
-+ return;
-+ }
-+
-+ early_nvram_init_fill(base, lim);
-+}
-+#endif
-+
-+#ifdef CONFIG_BCM47XX_SSB
-+static void early_nvram_init_ssb(void)
-+{
-+ struct ssb_mipscore *mcore = &bcm47xx_bus.ssb.mipscore;
-+ struct ssb_chipcommon *chipco = &bcm47xx_bus.ssb.chipco;
-+ u32 base = 0;
-+ u32 lim = 0;
-+
-+ if (mcore->pflash.present) {
-+ base = mcore->pflash.window;
-+ lim = mcore->pflash.window_size;
-+ } else if (chipco->sflash.present) {
-+ base = chipco->sflash.window;
-+ lim = chipco->sflash.size;
-+ } else {
-+ pr_err("No supported flash found\n");
-+ return;
-+ }
-+
-+ early_nvram_init_fill(base, lim);
-+}
-+#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)
- {
- char *var, *value, *end, *eq;
projects / openwrt.git / blobdiff