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https://github.com/brain-hackers/u-boot-brain
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![Stephen Warren](/assets/img/avatar_default.png)
Create a fake model table entry with default values, so we can error check the board rev value once when querying it from the firmware, rather than error-checking for invalid board rev values every time the model table is used. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
325 lines
6.8 KiB
C
325 lines
6.8 KiB
C
/*
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* (C) Copyright 2012-2013 Stephen Warren
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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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 <lcd.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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.base = 0x20201000,
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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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/* See comments in mbox.h for data source */
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static const struct {
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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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} models[] = {
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[0] = {
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"Unknown model",
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"bcm2835-rpi-other.dtb",
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false,
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},
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[BCM2835_BOARD_REV_B_I2C0_2] = {
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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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[BCM2835_BOARD_REV_B_I2C0_3] = {
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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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[BCM2835_BOARD_REV_B_I2C1_4] = {
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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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[BCM2835_BOARD_REV_B_I2C1_5] = {
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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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[BCM2835_BOARD_REV_B_I2C1_6] = {
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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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[BCM2835_BOARD_REV_A_7] = {
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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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[BCM2835_BOARD_REV_A_8] = {
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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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[BCM2835_BOARD_REV_A_9] = {
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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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[BCM2835_BOARD_REV_B_REV2_d] = {
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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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[BCM2835_BOARD_REV_B_REV2_e] = {
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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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[BCM2835_BOARD_REV_B_REV2_f] = {
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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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[BCM2835_BOARD_REV_B_PLUS] = {
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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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[BCM2835_BOARD_REV_CM] = {
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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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[BCM2835_BOARD_REV_A_PLUS] = {
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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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u32 rpi_board_rev = 0;
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int dram_init(void)
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{
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ALLOC_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1, 16);
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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 = models[rpi_board_rev].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_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1, 16);
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int ret;
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if (!models[rpi_board_rev].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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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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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_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1, 16);
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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_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1, 16);
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int ret;
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const char *name;
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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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rpi_board_rev = msg->get_board_rev.body.resp.rev;
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if (rpi_board_rev >= ARRAY_SIZE(models)) {
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printf("RPI: Board rev %u outside known range\n",
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rpi_board_rev);
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rpi_board_rev = 0;
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}
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if (!models[rpi_board_rev].name) {
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printf("RPI: Board rev %u unknown\n", rpi_board_rev);
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rpi_board_rev = 0;
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}
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name = models[rpi_board_rev].name;
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printf("RPI model: %s\n", name);
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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_ALIGN_BUFFER(struct msg_get_clock_rate, msg_clk, 1, 16);
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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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