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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019 Microchip Technology Inc.
* Padmarao Begari <padmarao.begari@microchip.com>
*/
#include <common.h>
#include <dm.h>
#include <env.h>
#include <init.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
#define MPFS_SYSREG_SOFT_RESET ((unsigned int *)0x20002088)
#define MPFS_SYS_SERVICE_CR ((unsigned int *)0x37020050)
#define MPFS_SYS_SERVICE_SR ((unsigned int *)0x37020054)
#define MPFS_SYS_SERVICE_MAILBOX ((unsigned char *)0x37020800)
#define PERIPH_RESET_VALUE 0x1e8u
#define SERVICE_CR_REQ 0x1u
#define SERVICE_SR_BUSY 0x2u
static void read_device_serial_number(u8 *response, u8 response_size)
{
u8 idx;
u8 *response_buf;
unsigned int val;
response_buf = (u8 *)response;
writel(SERVICE_CR_REQ, MPFS_SYS_SERVICE_CR);
/*
* REQ bit will remain set till the system controller starts
* processing.
*/
do {
val = readl(MPFS_SYS_SERVICE_CR);
} while (SERVICE_CR_REQ == (val & SERVICE_CR_REQ));
/*
* Once system controller starts processing the busy bit will
* go high and service is completed when busy bit is gone low
*/
do {
val = readl(MPFS_SYS_SERVICE_SR);
} while (SERVICE_SR_BUSY == (val & SERVICE_SR_BUSY));
for (idx = 0; idx < response_size; idx++)
response_buf[idx] = readb(MPFS_SYS_SERVICE_MAILBOX + idx);
}
int board_init(void)
{
/* For now nothing to do here. */
return 0;
}
int board_early_init_f(void)
{
unsigned int val;
/* Reset uart, mmc peripheral */
val = readl(MPFS_SYSREG_SOFT_RESET);
val = (val & ~(PERIPH_RESET_VALUE));
writel(val, MPFS_SYSREG_SOFT_RESET);
return 0;
}
int board_late_init(void)
{
u32 ret;
u32 node;
u8 idx;
u8 device_serial_number[16] = { 0 };
unsigned char mac_addr[6];
char icicle_mac_addr[20];
void *blob = (void *)gd->fdt_blob;
node = fdt_path_offset(blob, "ethernet0");
if (node < 0) {
printf("No ethernet0 path offset\n");
return -ENODEV;
}
ret = fdtdec_get_byte_array(blob, node, "local-mac-address", mac_addr, 6);
if (ret) {
printf("No local-mac-address property\n");
return -EINVAL;
}
read_device_serial_number(device_serial_number, 16);
/* Update MAC address with device serial number */
mac_addr[0] = 0x00;
mac_addr[1] = 0x04;
mac_addr[2] = 0xA3;
mac_addr[3] = device_serial_number[2];
mac_addr[4] = device_serial_number[1];
mac_addr[5] = device_serial_number[0];
ret = fdt_setprop(blob, node, "local-mac-address", mac_addr, 6);
if (ret) {
printf("Error setting local-mac-address property\n");
return -ENODEV;
}
icicle_mac_addr[0] = '[';
sprintf(&icicle_mac_addr[1], "%pM", mac_addr);
icicle_mac_addr[18] = ']';
icicle_mac_addr[19] = '\0';
for (idx = 0; idx < 20; idx++) {
if (icicle_mac_addr[idx] == ':')
icicle_mac_addr[idx] = ' ';
}
env_set("icicle_mac_addr", icicle_mac_addr);
return 0;
}
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