mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-05 10:46:15 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
497 lines
10 KiB
C
497 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 <inttypes.h>
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#include <config.h>
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#include <dm.h>
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#include <environment.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 <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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/* From lowlevel_init.S */
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extern unsigned long 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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* http://raspberryalphaomega.org.uk/2013/02/06/automatic-raspberry-pi-board-revision-detection-model-a-b1-and-b2/
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* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=32733
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* http://git.drogon.net/?p=wiringPi;a=blob;f=wiringPi/wiringPi.c;h=503151f61014418b9c42f4476a6086f75cd4e64b;hb=refs/heads/master#l922
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*
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* In http://lists.denx.de/pipermail/u-boot/2016-January/243752.html
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* ("[U-Boot] [PATCH] rpi: fix up Model B entries") Dom Cobley at the RPi
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* Foundation stated that the following source was accurate:
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* https://github.com/AndrewFromMelbourne/raspberry_pi_revision
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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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};
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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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#ifdef CONFIG_ARM64
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static struct mm_region bcm2837_mem_map[] = {
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{
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.virt = 0x00000000UL,
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.phys = 0x00000000UL,
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.size = 0x3f000000UL,
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.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
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PTE_BLOCK_INNER_SHARE
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}, {
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.virt = 0x3f000000UL,
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.phys = 0x3f000000UL,
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.size = 0x01000000UL,
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.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
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PTE_BLOCK_NON_SHARE |
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PTE_BLOCK_PXN | PTE_BLOCK_UXN
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}, {
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/* List terminator */
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0,
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}
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};
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struct mm_region *mem_map = bcm2837_mem_map;
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#endif
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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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return 0;
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}
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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), "%016" PRIx64,
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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_rev(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_rev();
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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(void)
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{
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if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
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return NULL;
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return (void *)fw_dtb_pointer;
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}
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int ft_board_setup(void *blob, bd_t *bd)
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{
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/*
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* For now, we simply always add the simplefb DT node. Later, we
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* should be more intelligent, and e.g. only do this if no enabled DT
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* node exists for the "real" graphics driver.
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*/
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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, 1, EFI_RESERVED_MEMORY_TYPE, 0);
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#endif
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return 0;
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}
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