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authorKuninori Morimoto <morimoto.kuninori@renesas.com>2009-09-10 01:39:58 +0000
committerPaul Mundt <lethal@linux-sh.org>2009-09-11 13:19:18 +0900
commit4907d57f76dc1d6c49c19c653fb705b9a2a8487c (patch)
treeff81abc32feb86dfd1c2fd4e392aebba23af66c7 /arch/sh
parentbe4ebf999a38dfe9d7d705c4913624ec816c48f2 (diff)
sh: EcoVec24: write MAC address in boot
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/boards/mach-ecovec24/setup.c81
1 files changed, 79 insertions, 2 deletions
diff --git a/arch/sh/boards/mach-ecovec24/setup.c b/arch/sh/boards/mach-ecovec24/setup.c
index b44c06058e3..6cd1b782845 100644
--- a/arch/sh/boards/mach-ecovec24/setup.c
+++ b/arch/sh/boards/mach-ecovec24/setup.c
@@ -17,6 +17,7 @@
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/usb/r8a66597.h>
+#include <linux/i2c.h>
#include <video/sh_mobile_lcdc.h>
#include <media/sh_mobile_ceu.h>
#include <asm/heartbeat.h>
@@ -342,9 +343,77 @@ static struct platform_device *ecovec_devices[] __initdata = {
&ceu1_device,
};
+#define EEPROM_ADDR 0x50
+static u8 mac_read(struct i2c_adapter *a, u8 command)
+{
+ struct i2c_msg msg[2];
+ u8 buf;
+ int ret;
+
+ msg[0].addr = EEPROM_ADDR;
+ msg[0].flags = 0;
+ msg[0].len = 1;
+ msg[0].buf = &command;
+
+ msg[1].addr = EEPROM_ADDR;
+ msg[1].flags = I2C_M_RD;
+ msg[1].len = 1;
+ msg[1].buf = &buf;
+
+ ret = i2c_transfer(a, msg, 2);
+ if (ret < 0) {
+ printk(KERN_ERR "error %d\n", ret);
+ buf = 0xff;
+ }
+
+ return buf;
+}
+
+#define MAC_LEN 6
+static void __init sh_eth_init(void)
+{
+ struct i2c_adapter *a = i2c_get_adapter(1);
+ struct clk *eth_clk;
+ u8 mac[MAC_LEN];
+ int i;
+
+ if (!a) {
+ pr_err("can not get I2C 1\n");
+ return;
+ }
+
+ eth_clk = clk_get(NULL, "eth0");
+ if (!eth_clk) {
+ pr_err("can not get eth0 clk\n");
+ return;
+ }
+
+ /* read MAC address frome EEPROM */
+ for (i = 0; i < MAC_LEN; i++) {
+ mac[i] = mac_read(a, 0x10 + i);
+ msleep(10);
+ }
+
+ /* clock enable */
+ clk_enable(eth_clk);
+
+ /* reset sh-eth */
+ ctrl_outl(0x1, SH_ETH_ADDR + 0x0);
+
+ /* set MAC addr */
+ ctrl_outl((mac[0] << 24) |
+ (mac[1] << 16) |
+ (mac[2] << 8) |
+ (mac[3] << 0), SH_ETH_MAHR);
+ ctrl_outl((mac[4] << 8) |
+ (mac[5] << 0), SH_ETH_MALR);
+
+ clk_put(eth_clk);
+}
+
#define PORT_HIZA 0xA4050158
#define IODRIVEA 0xA405018A
-static int __init devices_setup(void)
+static int __init arch_setup(void)
{
/* enable SCIFA0 */
gpio_request(GPIO_FN_SCIF0_TXD, NULL);
@@ -521,7 +590,15 @@ static int __init devices_setup(void)
return platform_add_devices(ecovec_devices,
ARRAY_SIZE(ecovec_devices));
}
-arch_initcall(devices_setup);
+arch_initcall(arch_setup);
+
+static int __init devices_setup(void)
+{
+ sh_eth_init();
+ return 0;
+}
+device_initcall(devices_setup);
+
static struct sh_machine_vector mv_ecovec __initmv = {
.mv_name = "R0P7724 (EcoVec)",