diff options
Diffstat (limited to 'target/linux/brcm-2.4/files/arch/mips/bcm947xx/nvram.c')
| -rw-r--r-- | target/linux/brcm-2.4/files/arch/mips/bcm947xx/nvram.c | 252 |
1 files changed, 0 insertions, 252 deletions
diff --git a/target/linux/brcm-2.4/files/arch/mips/bcm947xx/nvram.c b/target/linux/brcm-2.4/files/arch/mips/bcm947xx/nvram.c deleted file mode 100644 index e93752a373..0000000000 --- a/target/linux/brcm-2.4/files/arch/mips/bcm947xx/nvram.c +++ /dev/null @@ -1,252 +0,0 @@ -/* - * NVRAM variable manipulation (Linux kernel half) - * - * Copyright 2006, Broadcom Corporation - * All Rights Reserved. - * - * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY - * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM - * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS - * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. - * - */ - -#include <linux/config.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/interrupt.h> -#include <linux/spinlock.h> -#include <linux/slab.h> -#include <linux/bootmem.h> -#include <linux/wrapper.h> -#include <linux/fs.h> -#include <linux/miscdevice.h> -#include <linux/mtd/mtd.h> -#include <asm/addrspace.h> -#include <asm/io.h> -#include <asm/uaccess.h> - -#include <typedefs.h> -#include <osl.h> -#include <bcmendian.h> -#include <bcmnvram.h> -#include <sbconfig.h> -#include <sbchipc.h> -#include <sbutils.h> -#include <hndmips.h> -#include <sflash.h> - -/* In BSS to minimize text size and page aligned so it can be mmap()-ed */ -static char nvram_buf[NVRAM_SPACE] __attribute__((aligned(PAGE_SIZE))); - -/* Global SB handle */ -extern void *bcm947xx_sbh; -extern spinlock_t bcm947xx_sbh_lock; - -static int cfe_env; -extern char *cfe_env_get(char *nv_buf, const char *name); - -/* Convenience */ -#define sbh bcm947xx_sbh -#define sbh_lock bcm947xx_sbh_lock - -/* Probe for NVRAM header */ -static void __init -early_nvram_init(void) -{ - struct nvram_header *header; - chipcregs_t *cc; - struct sflash *info = NULL; - int i; - uint32 base, off, lim; - u32 *src, *dst; - - if ((cc = sb_setcore(sbh, SB_CC, 0)) != NULL) { - base = KSEG1ADDR(SB_FLASH2); - switch (readl(&cc->capabilities) & CC_CAP_FLASH_MASK) { - case PFLASH: - lim = SB_FLASH2_SZ; - break; - - case SFLASH_ST: - case SFLASH_AT: - if ((info = sflash_init(sbh,cc)) == NULL) - return; - lim = info->size; - break; - - case FLASH_NONE: - default: - return; - } - } else { - /* extif assumed, Stop at 4 MB */ - base = KSEG1ADDR(SB_FLASH1); - lim = SB_FLASH1_SZ; - } - - /* XXX: hack for supporting the CFE environment stuff on WGT634U */ - src = (u32 *) KSEG1ADDR(base + 8 * 1024 * 1024 - 0x2000); - dst = (u32 *) nvram_buf; - if ((lim == 0x02000000) && ((*src & 0xff00ff) == 0x000001)) { - printk("early_nvram_init: WGT634U NVRAM found.\n"); - - for (i = 0; i < 0x1ff0; i++) { - if (*src == 0xFFFFFFFF) - break; - *dst++ = *src++; - } - cfe_env = 1; - return; - } - - off = FLASH_MIN; - while (off <= lim) { - /* Windowed flash access */ - header = (struct nvram_header *) KSEG1ADDR(base + off - NVRAM_SPACE); - if (header->magic == NVRAM_MAGIC) - goto found; - off <<= 1; - } - - /* Try embedded NVRAM at 4 KB and 1 KB as last resorts */ - header = (struct nvram_header *) KSEG1ADDR(base + 4 * 1024); - if (header->magic == NVRAM_MAGIC) - goto found; - - header = (struct nvram_header *) KSEG1ADDR(base + 1 * 1024); - if (header->magic == NVRAM_MAGIC) - goto found; - - printk("early_nvram_init: NVRAM not found\n"); - return; - -found: - 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) - *dst++ = ltoh32(*src++); -} - -/* Early (before mm or mtd) read-only access to NVRAM */ -static char * __init -early_nvram_get(const char *name) -{ - char *var, *value, *end, *eq; - - if (!name) - return NULL; - - /* Too early? */ - if (sbh == NULL) - return NULL; - - if (!nvram_buf[0]) - early_nvram_init(); - - if (cfe_env) - return cfe_env_get(nvram_buf, name); - - /* Look for name=value and return value */ - var = &nvram_buf[sizeof(struct nvram_header)]; - end = nvram_buf + sizeof(nvram_buf) - 2; - end[0] = end[1] = '\0'; - for (; *var; var = value + strlen(value) + 1) { - if (!(eq = strchr(var, '='))) - break; - value = eq + 1; - if ((eq - var) == strlen(name) && strncmp(var, name, (eq - var)) == 0) - return value; - } - - return NULL; -} - -static int __init -early_nvram_getall(char *buf, int count) -{ - char *var, *end; - int len = 0; - - /* Too early? */ - if (sbh == NULL) - return -1; - - if (!nvram_buf[0]) - early_nvram_init(); - - bzero(buf, count); - - /* Write name=value\0 ... \0\0 */ - var = &nvram_buf[sizeof(struct nvram_header)]; - end = nvram_buf + sizeof(nvram_buf) - 2; - end[0] = end[1] = '\0'; - for (; *var; var += strlen(var) + 1) { - if ((count - len) <= (strlen(var) + 1)) - break; - len += sprintf(buf + len, "%s", var) + 1; - } - - return 0; -} - - -char * -nvram_get(const char *name) -{ - return early_nvram_get(name); -} - -int -nvram_getall(char *buf, int count) -{ - unsigned long flags; - int ret; - - return early_nvram_getall(buf, count); -} - -/* - * Search the name=value vars for a specific one and return its value. - * Returns NULL if not found. - */ -char* -getvar(char *vars, const char *name) -{ - char *s; - int len; - - len = strlen(name); - - /* first look in vars[] */ - for (s = vars; s && *s;) { - /* CSTYLED */ - if ((memcmp(s, name, len) == 0) && (s[len] == '=')) - return (&s[len+1]); - - while (*s++); - } - - /* then query nvram */ - return (nvram_get(name)); -} - -/* - * Search the vars for a specific one and return its value as - * an integer. Returns 0 if not found. - */ -int -getintvar(char *vars, const char *name) -{ - char *val; - - if ((val = getvar(vars, name)) == NULL) - return (0); - - return (simple_strtoul(val, NULL, 0)); -} - |