mirror of
https://github.com/AsahiLinux/u-boot
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5c007d24b9
This patch updates Microchip MPFS Icicle Kit support. For now, add Microchip I2C driver, set environment variables for mac addresses and default build for SBI_V02. Signed-off-by: Padmarao Begari <padmarao.begari@microchip.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
140 lines
3.1 KiB
C
140 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2019 Microchip Technology Inc.
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* Padmarao Begari <padmarao.begari@microchip.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <env.h>
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#include <init.h>
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#include <asm/global_data.h>
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#include <asm/io.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define MPFS_SYSREG_SOFT_RESET ((unsigned int *)0x20002088)
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#define MPFS_SYS_SERVICE_CR ((unsigned int *)0x37020050)
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#define MPFS_SYS_SERVICE_SR ((unsigned int *)0x37020054)
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#define MPFS_SYS_SERVICE_MAILBOX ((unsigned char *)0x37020800)
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#define PERIPH_RESET_VALUE 0x1e8u
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#define SERVICE_CR_REQ 0x1u
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#define SERVICE_SR_BUSY 0x2u
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static void read_device_serial_number(u8 *response, u8 response_size)
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{
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u8 idx;
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u8 *response_buf;
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unsigned int val;
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response_buf = (u8 *)response;
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writel(SERVICE_CR_REQ, MPFS_SYS_SERVICE_CR);
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/*
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* REQ bit will remain set till the system controller starts
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* processing.
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*/
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do {
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val = readl(MPFS_SYS_SERVICE_CR);
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} while (SERVICE_CR_REQ == (val & SERVICE_CR_REQ));
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/*
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* Once system controller starts processing the busy bit will
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* go high and service is completed when busy bit is gone low
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*/
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do {
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val = readl(MPFS_SYS_SERVICE_SR);
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} while (SERVICE_SR_BUSY == (val & SERVICE_SR_BUSY));
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for (idx = 0; idx < response_size; idx++)
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response_buf[idx] = readb(MPFS_SYS_SERVICE_MAILBOX + idx);
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}
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int board_init(void)
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{
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/* For now nothing to do here. */
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return 0;
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}
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int board_early_init_f(void)
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{
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unsigned int val;
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/* Reset uart, mmc peripheral */
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val = readl(MPFS_SYSREG_SOFT_RESET);
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val = (val & ~(PERIPH_RESET_VALUE));
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writel(val, MPFS_SYSREG_SOFT_RESET);
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return 0;
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}
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int board_late_init(void)
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{
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u32 ret;
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u32 node;
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u8 idx;
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u8 device_serial_number[16] = { 0 };
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unsigned char mac_addr[6];
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char icicle_mac_addr[20];
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void *blob = (void *)gd->fdt_blob;
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node = fdt_path_offset(blob, "ethernet0");
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if (node < 0) {
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printf("No ethernet0 path offset\n");
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return -ENODEV;
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}
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ret = fdtdec_get_byte_array(blob, node, "local-mac-address", mac_addr, 6);
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if (ret) {
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printf("No local-mac-address property\n");
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return -EINVAL;
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}
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read_device_serial_number(device_serial_number, 16);
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/* Update MAC address with device serial number */
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mac_addr[0] = 0x00;
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mac_addr[1] = 0x04;
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mac_addr[2] = 0xA3;
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mac_addr[3] = device_serial_number[2];
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mac_addr[4] = device_serial_number[1];
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mac_addr[5] = device_serial_number[0];
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ret = fdt_setprop(blob, node, "local-mac-address", mac_addr, 6);
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if (ret) {
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printf("Error setting local-mac-address property\n");
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return -ENODEV;
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}
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icicle_mac_addr[0] = '[';
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sprintf(&icicle_mac_addr[1], "%pM", mac_addr);
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icicle_mac_addr[18] = ']';
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icicle_mac_addr[19] = '\0';
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for (idx = 0; idx < 20; idx++) {
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if (icicle_mac_addr[idx] == ':')
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icicle_mac_addr[idx] = ' ';
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}
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env_set("icicle_mac_addr0", icicle_mac_addr);
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mac_addr[5] = device_serial_number[0] + 1;
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icicle_mac_addr[0] = '[';
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sprintf(&icicle_mac_addr[1], "%pM", mac_addr);
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icicle_mac_addr[18] = ']';
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icicle_mac_addr[19] = '\0';
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for (idx = 0; idx < 20; idx++) {
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if (icicle_mac_addr[idx] == ':')
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icicle_mac_addr[idx] = ' ';
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}
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env_set("icicle_mac_addr1", icicle_mac_addr);
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return 0;
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}
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