mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-25 20:43:32 +00:00
5e7e6619c8
The Raspberry Pi Foundation released the new Zero 2 W which we want to detect, so we can detect the correct device tree file name. Signed-off-by: Peter Robinson <pbrobinson@gmail.com> Signed-off-by: Matthias Brugger <mbrugger@suse.com>
522 lines
10 KiB
C
522 lines
10 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) Copyright 2012-2016 Stephen Warren
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*/
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#include <common.h>
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#include <config.h>
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#include <dm.h>
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#include <env.h>
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#include <efi_loader.h>
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#include <fdt_support.h>
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#include <fdt_simplefb.h>
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#include <init.h>
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#include <lcd.h>
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#include <memalign.h>
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#include <mmc.h>
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#include <asm/gpio.h>
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#include <asm/arch/mbox.h>
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#include <asm/arch/msg.h>
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#include <asm/arch/sdhci.h>
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#include <asm/global_data.h>
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#include <dm/platform_data/serial_bcm283x_mu.h>
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#ifdef CONFIG_ARM64
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#include <asm/armv8/mmu.h>
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#endif
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#include <watchdog.h>
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#include <dm/pinctrl.h>
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DECLARE_GLOBAL_DATA_PTR;
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/* Assigned in lowlevel_init.S
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* Push the variable into the .data section so that it
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* does not get cleared later.
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*/
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unsigned long __section(".data") fw_dtb_pointer;
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/* TODO(sjg@chromium.org): Move these to the msg.c file */
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struct msg_get_arm_mem {
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struct bcm2835_mbox_hdr hdr;
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struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
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u32 end_tag;
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};
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struct msg_get_board_rev {
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struct bcm2835_mbox_hdr hdr;
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struct bcm2835_mbox_tag_get_board_rev get_board_rev;
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u32 end_tag;
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};
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struct msg_get_board_serial {
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struct bcm2835_mbox_hdr hdr;
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struct bcm2835_mbox_tag_get_board_serial get_board_serial;
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u32 end_tag;
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};
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struct msg_get_mac_address {
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struct bcm2835_mbox_hdr hdr;
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struct bcm2835_mbox_tag_get_mac_address get_mac_address;
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u32 end_tag;
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};
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struct msg_get_clock_rate {
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struct bcm2835_mbox_hdr hdr;
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struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
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u32 end_tag;
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};
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#ifdef CONFIG_ARM64
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#define DTB_DIR "broadcom/"
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#else
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#define DTB_DIR ""
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#endif
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/*
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* https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#raspberry-pi-revision-codes
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*/
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struct rpi_model {
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const char *name;
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const char *fdtfile;
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bool has_onboard_eth;
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};
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static const struct rpi_model rpi_model_unknown = {
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"Unknown model",
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DTB_DIR "bcm283x-rpi-other.dtb",
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false,
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};
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static const struct rpi_model rpi_models_new_scheme[] = {
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[0x0] = {
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"Model A",
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DTB_DIR "bcm2835-rpi-a.dtb",
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false,
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},
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[0x1] = {
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"Model B",
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DTB_DIR "bcm2835-rpi-b.dtb",
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true,
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},
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[0x2] = {
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"Model A+",
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DTB_DIR "bcm2835-rpi-a-plus.dtb",
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false,
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},
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[0x3] = {
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"Model B+",
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DTB_DIR "bcm2835-rpi-b-plus.dtb",
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true,
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},
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[0x4] = {
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"2 Model B",
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DTB_DIR "bcm2836-rpi-2-b.dtb",
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true,
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},
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[0x6] = {
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"Compute Module",
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DTB_DIR "bcm2835-rpi-cm.dtb",
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false,
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},
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[0x8] = {
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"3 Model B",
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DTB_DIR "bcm2837-rpi-3-b.dtb",
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true,
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},
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[0x9] = {
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"Zero",
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DTB_DIR "bcm2835-rpi-zero.dtb",
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false,
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},
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[0xA] = {
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"Compute Module 3",
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DTB_DIR "bcm2837-rpi-cm3.dtb",
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false,
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},
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[0xC] = {
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"Zero W",
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DTB_DIR "bcm2835-rpi-zero-w.dtb",
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false,
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},
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[0xD] = {
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"3 Model B+",
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DTB_DIR "bcm2837-rpi-3-b-plus.dtb",
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true,
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},
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[0xE] = {
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"3 Model A+",
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DTB_DIR "bcm2837-rpi-3-a-plus.dtb",
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false,
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},
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[0x10] = {
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"Compute Module 3+",
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DTB_DIR "bcm2837-rpi-cm3.dtb",
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false,
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},
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[0x11] = {
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"4 Model B",
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DTB_DIR "bcm2711-rpi-4-b.dtb",
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true,
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},
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[0x12] = {
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"Zero 2 W",
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DTB_DIR "bcm2837-rpi-zero-2.dtb",
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false,
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},
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[0x13] = {
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"400",
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DTB_DIR "bcm2711-rpi-400.dtb",
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true,
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},
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[0x14] = {
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"Compute Module 4",
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DTB_DIR "bcm2711-rpi-cm4.dtb",
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true,
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},
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};
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static const struct rpi_model rpi_models_old_scheme[] = {
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[0x2] = {
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"Model B",
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DTB_DIR "bcm2835-rpi-b.dtb",
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true,
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},
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[0x3] = {
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"Model B",
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DTB_DIR "bcm2835-rpi-b.dtb",
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true,
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},
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[0x4] = {
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"Model B rev2",
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DTB_DIR "bcm2835-rpi-b-rev2.dtb",
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true,
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},
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[0x5] = {
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"Model B rev2",
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DTB_DIR "bcm2835-rpi-b-rev2.dtb",
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true,
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},
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[0x6] = {
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"Model B rev2",
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DTB_DIR "bcm2835-rpi-b-rev2.dtb",
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true,
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},
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[0x7] = {
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"Model A",
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DTB_DIR "bcm2835-rpi-a.dtb",
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false,
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},
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[0x8] = {
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"Model A",
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DTB_DIR "bcm2835-rpi-a.dtb",
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false,
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},
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[0x9] = {
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"Model A",
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DTB_DIR "bcm2835-rpi-a.dtb",
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false,
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},
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[0xd] = {
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"Model B rev2",
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DTB_DIR "bcm2835-rpi-b-rev2.dtb",
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true,
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},
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[0xe] = {
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"Model B rev2",
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DTB_DIR "bcm2835-rpi-b-rev2.dtb",
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true,
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},
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[0xf] = {
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"Model B rev2",
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DTB_DIR "bcm2835-rpi-b-rev2.dtb",
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true,
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},
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[0x10] = {
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"Model B+",
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DTB_DIR "bcm2835-rpi-b-plus.dtb",
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true,
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},
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[0x11] = {
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"Compute Module",
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DTB_DIR "bcm2835-rpi-cm.dtb",
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false,
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},
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[0x12] = {
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"Model A+",
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DTB_DIR "bcm2835-rpi-a-plus.dtb",
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false,
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},
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[0x13] = {
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"Model B+",
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DTB_DIR "bcm2835-rpi-b-plus.dtb",
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true,
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},
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[0x14] = {
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"Compute Module",
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DTB_DIR "bcm2835-rpi-cm.dtb",
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false,
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},
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[0x15] = {
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"Model A+",
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DTB_DIR "bcm2835-rpi-a-plus.dtb",
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false,
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},
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};
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static uint32_t revision;
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static uint32_t rev_scheme;
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static uint32_t rev_type;
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static const struct rpi_model *model;
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int dram_init(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1);
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int ret;
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BCM2835_MBOX_INIT_HDR(msg);
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BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
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ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
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if (ret) {
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printf("bcm2835: Could not query ARM memory size\n");
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return -1;
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}
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gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
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/*
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* In some configurations the memory size returned by VideoCore
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* is not aligned to the section size, what is mandatory for
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* the u-boot's memory setup.
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*/
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gd->ram_size &= ~MMU_SECTION_SIZE;
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return 0;
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}
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#ifdef CONFIG_OF_BOARD
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int dram_init_banksize(void)
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{
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int ret;
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ret = fdtdec_setup_memory_banksize();
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if (ret)
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return ret;
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return fdtdec_setup_mem_size_base();
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}
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#endif
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static void set_fdtfile(void)
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{
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const char *fdtfile;
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if (env_get("fdtfile"))
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return;
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fdtfile = model->fdtfile;
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env_set("fdtfile", fdtfile);
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}
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/*
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* If the firmware provided a valid FDT at boot time, let's expose it in
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* ${fdt_addr} so it may be passed unmodified to the kernel.
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*/
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static void set_fdt_addr(void)
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{
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if (env_get("fdt_addr"))
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return;
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if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
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return;
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env_set_hex("fdt_addr", fw_dtb_pointer);
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}
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/*
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* Prevent relocation from stomping on a firmware provided FDT blob.
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*/
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unsigned long board_get_usable_ram_top(unsigned long total_size)
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{
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if ((gd->ram_top - fw_dtb_pointer) > SZ_64M)
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return gd->ram_top;
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return fw_dtb_pointer & ~0xffff;
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}
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static void set_usbethaddr(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1);
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int ret;
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if (!model->has_onboard_eth)
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return;
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if (env_get("usbethaddr"))
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return;
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BCM2835_MBOX_INIT_HDR(msg);
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BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS);
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ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
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if (ret) {
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printf("bcm2835: Could not query MAC address\n");
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/* Ignore error; not critical */
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return;
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}
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eth_env_set_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
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if (!env_get("ethaddr"))
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env_set("ethaddr", env_get("usbethaddr"));
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return;
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}
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#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
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static void set_board_info(void)
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{
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char s[11];
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snprintf(s, sizeof(s), "0x%X", revision);
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env_set("board_revision", s);
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snprintf(s, sizeof(s), "%d", rev_scheme);
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env_set("board_rev_scheme", s);
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/* Can't rename this to board_rev_type since it's an ABI for scripts */
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snprintf(s, sizeof(s), "0x%X", rev_type);
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env_set("board_rev", s);
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env_set("board_name", model->name);
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}
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#endif /* CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG */
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static void set_serial_number(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_serial, msg, 1);
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int ret;
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char serial_string[17] = { 0 };
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if (env_get("serial#"))
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return;
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BCM2835_MBOX_INIT_HDR(msg);
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BCM2835_MBOX_INIT_TAG_NO_REQ(&msg->get_board_serial, GET_BOARD_SERIAL);
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ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
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if (ret) {
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printf("bcm2835: Could not query board serial\n");
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/* Ignore error; not critical */
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return;
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}
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snprintf(serial_string, sizeof(serial_string), "%016llx",
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msg->get_board_serial.body.resp.serial);
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env_set("serial#", serial_string);
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}
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int misc_init_r(void)
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{
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set_fdt_addr();
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set_fdtfile();
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set_usbethaddr();
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#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
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set_board_info();
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#endif
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set_serial_number();
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return 0;
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}
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static void get_board_revision(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1);
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int ret;
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const struct rpi_model *models;
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uint32_t models_count;
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BCM2835_MBOX_INIT_HDR(msg);
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BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV);
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ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
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if (ret) {
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printf("bcm2835: Could not query board revision\n");
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/* Ignore error; not critical */
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return;
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}
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/*
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* For details of old-vs-new scheme, see:
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* https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py
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* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=690282
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* (a few posts down)
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*
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* For the RPi 1, bit 24 is the "warranty bit", so we mask off just the
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* lower byte to use as the board rev:
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* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=98367&start=250
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* http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594
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*/
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revision = msg->get_board_rev.body.resp.rev;
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if (revision & 0x800000) {
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rev_scheme = 1;
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rev_type = (revision >> 4) & 0xff;
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models = rpi_models_new_scheme;
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models_count = ARRAY_SIZE(rpi_models_new_scheme);
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} else {
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rev_scheme = 0;
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rev_type = revision & 0xff;
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models = rpi_models_old_scheme;
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models_count = ARRAY_SIZE(rpi_models_old_scheme);
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}
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if (rev_type >= models_count) {
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printf("RPI: Board rev 0x%x outside known range\n", rev_type);
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model = &rpi_model_unknown;
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} else if (!models[rev_type].name) {
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printf("RPI: Board rev 0x%x unknown\n", rev_type);
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model = &rpi_model_unknown;
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} else {
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model = &models[rev_type];
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}
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printf("RPI %s (0x%x)\n", model->name, revision);
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}
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int board_init(void)
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{
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#ifdef CONFIG_HW_WATCHDOG
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hw_watchdog_init();
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#endif
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get_board_revision();
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gd->bd->bi_boot_params = 0x100;
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return bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
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}
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/*
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* If the firmware passed a device tree use it for U-Boot.
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*/
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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 (fdt_magic(fw_dtb_pointer) != FDT_MAGIC) {
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*err = -ENXIO;
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return NULL;
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}
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return (void *)fw_dtb_pointer;
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}
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int ft_board_setup(void *blob, struct bd_info *bd)
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{
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int node;
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node = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
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if (node < 0)
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lcd_dt_simplefb_add_node(blob);
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#ifdef CONFIG_EFI_LOADER
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/* Reserve the spin table */
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efi_add_memory_map(0, CONFIG_RPI_EFI_NR_SPIN_PAGES << EFI_PAGE_SHIFT,
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EFI_RESERVED_MEMORY_TYPE);
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#endif
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return 0;
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}
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