3  * BCM947xx nvram variable access
38  * bcm47xx_nvram_is_valid - check for a valid NVRAM at specified memory
40 static bool bcm47xx_nvram_is_valid(void __iomem *nvram)  in bcm47xx_nvram_is_valid()  argument
42 	return ((struct nvram_header *)nvram)->magic == NVRAM_MAGIC;  in bcm47xx_nvram_is_valid()
46  * bcm47xx_nvram_copy - copy NVRAM to internal buffer
55 		pr_err("The nvram size according to the header seems to be bigger than the partition on flash\n");  in bcm47xx_nvram_copy()
59 …pr_err("nvram on flash (%zu bytes) is bigger than the reserved space in memory, will just copy the…  in bcm47xx_nvram_copy()
70  * bcm47xx_nvram_find_and_copy - find NVRAM on flash mapping & copy it
79 		pr_warn("nvram already initialized\n");  in bcm47xx_nvram_find_and_copy()
83 	/* TODO: when nvram is on nand flash check for bad blocks first. */  in bcm47xx_nvram_find_and_copy()
85 	/* Try every possible flash size and check for NVRAM at its end */  in bcm47xx_nvram_find_and_copy()
94 	/* Try embedded NVRAM at 4 KB and 1 KB as last resorts */  in bcm47xx_nvram_find_and_copy()
104 	pr_err("no nvram found\n");  in bcm47xx_nvram_find_and_copy()
116 		pr_warn("nvram already initialized\n");  in bcm47xx_nvram_init_from_iomem()
121 		pr_err("No valid NVRAM found\n");  in bcm47xx_nvram_init_from_iomem()
132  * On bcm47xx we need access to the NVRAM very early, so we can't use mtd
136  * soon as we get info about flash device, before any NVRAM entry is needed.
162 	mtd = get_mtd_device_nm("nvram");  in nvram_init()
171 …pr_err("nvram on flash (%zu bytes) is bigger than the reserved space in memory, will just copy the…  in nvram_init()
240 	char *nvram;  in bcm47xx_nvram_get_contents()  local
249 	nvram = vmalloc(*nvram_size);  in bcm47xx_nvram_get_contents()
250 	if (!nvram)  in bcm47xx_nvram_get_contents()
252 	memcpy(nvram, &nvram_buf[sizeof(struct nvram_header)], *nvram_size);  in bcm47xx_nvram_get_contents()
254 	return nvram;  in bcm47xx_nvram_get_contents()