upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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403 lines
8.3 KiB
403 lines
8.3 KiB
/*
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* (C) Copyright 2012-2013,2015 Stephen Warren
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*
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* SPDX-License-Identifier: GPL-2.0
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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 <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/sdhci.h>
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#include <asm/global_data.h>
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#include <dm/platform_data/serial_pl01x.h>
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DECLARE_GLOBAL_DATA_PTR;
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static const struct bcm2835_gpio_platdata gpio_platdata = {
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.base = BCM2835_GPIO_BASE,
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};
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U_BOOT_DEVICE(bcm2835_gpios) = {
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.name = "gpio_bcm2835",
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.platdata = &gpio_platdata,
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};
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static const struct pl01x_serial_platdata serial_platdata = {
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#ifdef CONFIG_BCM2836
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.base = 0x3f201000,
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#else
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.base = 0x20201000,
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#endif
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.type = TYPE_PL011,
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.clock = 3000000,
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};
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U_BOOT_DEVICE(bcm2835_serials) = {
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.name = "serial_pl01x",
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.platdata = &serial_platdata,
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};
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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_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_set_power_state {
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struct bcm2835_mbox_hdr hdr;
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struct bcm2835_mbox_tag_set_power_state set_power_state;
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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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/*
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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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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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#ifdef CONFIG_BCM2836
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"bcm2836-rpi-other.dtb",
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#else
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"bcm2835-rpi-other.dtb",
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#endif
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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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[0x4] = {
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"2 Model B",
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"bcm2836-rpi-2-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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"bcm2835-rpi-zero.dtb",
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false,
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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 (no P5)",
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"bcm2835-rpi-b-i2c0.dtb",
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true,
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},
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[0x3] = {
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"Model B (no P5)",
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"bcm2835-rpi-b-i2c0.dtb",
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true,
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},
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[0x4] = {
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"Model B",
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"bcm2835-rpi-b.dtb",
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true,
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},
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[0x5] = {
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"Model B",
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"bcm2835-rpi-b.dtb",
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true,
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},
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[0x6] = {
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"Model B",
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"bcm2835-rpi-b.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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"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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"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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"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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"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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"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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"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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"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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"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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"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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"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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"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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"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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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 (getenv("fdtfile"))
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return;
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fdtfile = model->fdtfile;
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setenv("fdtfile", fdtfile);
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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 (getenv("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_setenv_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
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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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setenv("board_revision", s);
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snprintf(s, sizeof(s), "%d", rev_scheme);
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setenv("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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setenv("board_rev", s);
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setenv("board_name", model->name);
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}
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#endif /* CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG */
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int misc_init_r(void)
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{
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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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return 0;
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}
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static int power_on_module(u32 module)
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{
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ALLOC_CACHE_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1);
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int ret;
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BCM2835_MBOX_INIT_HDR(msg_pwr);
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BCM2835_MBOX_INIT_TAG(&msg_pwr->set_power_state,
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SET_POWER_STATE);
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msg_pwr->set_power_state.body.req.device_id = module;
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msg_pwr->set_power_state.body.req.state =
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BCM2835_MBOX_SET_POWER_STATE_REQ_ON |
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BCM2835_MBOX_SET_POWER_STATE_REQ_WAIT;
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ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN,
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&msg_pwr->hdr);
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if (ret) {
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printf("bcm2835: Could not set module %u power state\n",
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module);
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return -1;
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}
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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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get_board_rev();
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gd->bd->bi_boot_params = 0x100;
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return power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
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}
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int board_mmc_init(bd_t *bis)
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{
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ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_clock_rate, msg_clk, 1);
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int ret;
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power_on_module(BCM2835_MBOX_POWER_DEVID_SDHCI);
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BCM2835_MBOX_INIT_HDR(msg_clk);
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BCM2835_MBOX_INIT_TAG(&msg_clk->get_clock_rate, GET_CLOCK_RATE);
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msg_clk->get_clock_rate.body.req.clock_id = BCM2835_MBOX_CLOCK_ID_EMMC;
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ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_clk->hdr);
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if (ret) {
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printf("bcm2835: Could not query eMMC clock rate\n");
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return -1;
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}
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return bcm2835_sdhci_init(BCM2835_SDHCI_BASE,
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msg_clk->get_clock_rate.body.resp.rate_hz);
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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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return 0;
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}
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