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https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 08:58:52 +09:00
![Simon Glass](/assets/img/avatar_default.png)
This function can fail if the device tree runs out of space. Rather than silently booting with an incomplete device tree, allow the failure to be detected. Unfortunately this involves changing a lot of places in the code. I have not changed behvaiour to return an error where one is not currently returned, to avoid unexpected breakage. Eventually it would be nice to allow boards to register functions to be called to update the device tree. This would avoid all the many functions to do this. However it's not clear yet if this should be done using driver model or with a linker list. This work is left for later. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de>
168 lines
3.9 KiB
C
168 lines
3.9 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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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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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_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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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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int misc_init_r(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 (getenv("usbethaddr"))
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return 0;
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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 0;
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}
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eth_setenv_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
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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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int board_init(void)
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{
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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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