mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 03:53:31 +00:00
e7fb789612
OF_HOSTFILE is used on sandbox configs only. Although it's pretty unique and not causing any confusions, we are better of having simpler config options for the DTB. So let's replace that with the existing OF_BOARD. U-Boot would then have only three config options for the DTB origin. - OF_SEPARATE, build separately from U-Boot - OF_BOARD, board specific way of providing the DTB - OF_EMBED embedded in the u-boot binary(should not be used in production Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
134 lines
2.7 KiB
C
134 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2019 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*/
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#include <cpu_func.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 <log.h>
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#include <linux/bitops.h>
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#include <linux/bug.h>
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#include <linux/delay.h>
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#include <misc.h>
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#include <spl.h>
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#include <asm/sections.h>
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/*
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* This define is a value used for error/unknown serial.
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* If we really care about distinguishing errors and 0 is
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* valid, we'll need a different one.
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*/
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#define ERROR_READING_SERIAL_NUMBER 0
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#ifdef CONFIG_MISC_INIT_R
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#if CONFIG_IS_ENABLED(SIFIVE_OTP)
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static u32 otp_read_serialnum(struct udevice *dev)
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{
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int ret;
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u32 serial[2] = {0};
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for (int i = 0xfe * 4; i > 0; i -= 8) {
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ret = misc_read(dev, i, serial, sizeof(serial));
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if (ret != sizeof(serial)) {
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printf("%s: error reading serial from OTP\n", __func__);
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break;
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}
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if (serial[0] == ~serial[1])
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return serial[0];
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}
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return ERROR_READING_SERIAL_NUMBER;
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}
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#endif
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static u32 fu540_read_serialnum(void)
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{
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u32 serial = ERROR_READING_SERIAL_NUMBER;
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#if CONFIG_IS_ENABLED(SIFIVE_OTP)
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struct udevice *dev;
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int ret;
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/* init OTP */
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ret = uclass_get_device_by_driver(UCLASS_MISC,
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DM_DRIVER_GET(sifive_otp), &dev);
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if (ret) {
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debug("%s: could not find otp device\n", __func__);
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return serial;
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}
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/* read serial from OTP and set env var */
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serial = otp_read_serialnum(dev);
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#endif
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return serial;
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}
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static void fu540_setup_macaddr(u32 serialnum)
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{
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/* Default MAC address */
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unsigned char mac[6] = { 0x70, 0xb3, 0xd5, 0x92, 0xf0, 0x00 };
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/*
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* We derive our board MAC address by ORing last three bytes
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* of board serial number to above default MAC address.
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*
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* This logic of deriving board MAC address is taken from
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* SiFive FSBL and is kept unchanged.
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*/
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mac[5] |= (serialnum >> 0) & 0xff;
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mac[4] |= (serialnum >> 8) & 0xff;
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mac[3] |= (serialnum >> 16) & 0xff;
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/* Update environment variable */
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eth_env_set_enetaddr("ethaddr", mac);
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}
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int misc_init_r(void)
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{
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u32 serial_num;
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char buf[9] = {0};
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/* Set ethaddr environment variable from board serial number */
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if (!env_get("serial#")) {
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serial_num = fu540_read_serialnum();
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if (!serial_num) {
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WARN(true, "Board serial number should not be 0 !!\n");
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return 0;
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}
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snprintf(buf, sizeof(buf), "%08x", serial_num);
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env_set("serial#", buf);
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fu540_setup_macaddr(serial_num);
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}
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return 0;
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}
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#endif
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void *board_fdt_blob_setup(int *err)
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{
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*err = 0;
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if (IS_ENABLED(CONFIG_OF_SEPARATE)) {
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if (gd->arch.firmware_fdt_addr)
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return (ulong *)(uintptr_t)gd->arch.firmware_fdt_addr;
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}
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return (ulong *)&_end;
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}
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int board_init(void)
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{
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/* enable all cache ways */
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enable_caches();
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return 0;
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}
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