Commit 5a8b0b13 authored by Simon Arlott's avatar Simon Arlott Committed by Ralf Baechle

MIPS: bcm63xx: nvram: Use nvram structure definition from header file

Use the common definition of the nvram structure from the header file
include/linux/bcm963xx_nvram.h instead of maintaining a separate copy.

Read the version 5 size of nvram data from memory and then call the
new checksum verification function from the header file.
Signed-off-by: default avatarSimon Arlott <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Brian Norris <[email protected]>
Cc: Kevin Cernekee <[email protected]>
Cc: Florian Fainelli <[email protected]>
Cc: Jonas Gorski <[email protected]>
Cc: Linux Kernel Mailing List <[email protected]>
Cc: MIPS Mailing List <[email protected]>
Cc: MTD Maling List <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/11831/Signed-off-by: default avatarRalf Baechle <[email protected]>
parent 3271e610
......@@ -10,6 +10,7 @@
#define pr_fmt(fmt) "bcm63xx_nvram: " fmt
#include <linux/bcm963xx_nvram.h>
#include <linux/init.h>
#include <linux/crc32.h>
#include <linux/export.h>
......@@ -18,23 +19,6 @@
#include <bcm63xx_nvram.h>
/*
* nvram structure
*/
struct bcm963xx_nvram {
u32 version;
u8 reserved1[256];
u8 name[16];
u32 main_tp_number;
u32 psi_size;
u32 mac_addr_count;
u8 mac_addr_base[ETH_ALEN];
u8 reserved2[2];
u32 checksum_old;
u8 reserved3[720];
u32 checksum_high;
};
#define BCM63XX_DEFAULT_PSI_SIZE 64
static struct bcm963xx_nvram nvram;
......@@ -42,27 +26,14 @@ static int mac_addr_used;
void __init bcm63xx_nvram_init(void *addr)
{
unsigned int check_len;
u32 crc, expected_crc;
u8 hcs_mac_addr[ETH_ALEN] = { 0x00, 0x10, 0x18, 0xff, 0xff, 0xff };
/* extract nvram data */
memcpy(&nvram, addr, sizeof(nvram));
memcpy(&nvram, addr, BCM963XX_NVRAM_V5_SIZE);
/* check checksum before using data */
if (nvram.version <= 4) {
check_len = offsetof(struct bcm963xx_nvram, reserved3);
expected_crc = nvram.checksum_old;
nvram.checksum_old = 0;
} else {
check_len = sizeof(nvram);
expected_crc = nvram.checksum_high;
nvram.checksum_high = 0;
}
crc = crc32_le(~0, (u8 *)&nvram, check_len);
if (crc != expected_crc)
if (bcm963xx_nvram_checksum(&nvram, &expected_crc, &crc))
pr_warn("nvram checksum failed, contents may be invalid (expected %08x, got %08x)\n",
expected_crc, crc);
......
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