mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-15 06:33:45 +09:00
![Tom Rini](/assets/img/avatar_default.png)
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>
304 lines
6.2 KiB
C
304 lines
6.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2015 Google, Inc
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*/
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#include <common.h>
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#include <debug_uart.h>
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#include <dm.h>
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#include <fdtdec.h>
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#include <i2c.h>
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#include <led.h>
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#include <malloc.h>
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#include <ram.h>
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#include <spl.h>
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#include <asm/gpio.h>
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#include <asm/io.h>
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#include <asm/arch/bootrom.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/periph.h>
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#include <asm/arch/pmu_rk3288.h>
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#include <asm/arch/sdram.h>
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#include <asm/arch/sdram_common.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/arch/timer.h>
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#include <dm/pinctrl.h>
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#include <dm/root.h>
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#include <dm/test.h>
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#include <dm/util.h>
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#include <power/regulator.h>
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#include <power/rk8xx_pmic.h>
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DECLARE_GLOBAL_DATA_PTR;
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u32 spl_boot_device(void)
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{
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#if !CONFIG_IS_ENABLED(OF_PLATDATA)
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const void *blob = gd->fdt_blob;
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struct udevice *dev;
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const char *bootdev;
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int node;
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int ret;
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bootdev = fdtdec_get_config_string(blob, "u-boot,boot0");
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debug("Boot device %s\n", bootdev);
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if (!bootdev)
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goto fallback;
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node = fdt_path_offset(blob, bootdev);
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if (node < 0) {
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debug("node=%d\n", node);
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goto fallback;
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}
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ret = device_get_global_by_of_offset(node, &dev);
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if (ret) {
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debug("device at node %s/%d not found: %d\n", bootdev, node,
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ret);
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goto fallback;
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}
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debug("Found device %s\n", dev->name);
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switch (device_get_uclass_id(dev)) {
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case UCLASS_SPI_FLASH:
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return BOOT_DEVICE_SPI;
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case UCLASS_MMC:
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return BOOT_DEVICE_MMC1;
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default:
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debug("Booting from device uclass '%s' not supported\n",
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dev_get_uclass_name(dev));
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}
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fallback:
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#elif defined(CONFIG_TARGET_CHROMEBOOK_JERRY) || \
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defined(CONFIG_TARGET_CHROMEBIT_MICKEY) || \
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defined(CONFIG_TARGET_CHROMEBOOK_MINNIE)
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return BOOT_DEVICE_SPI;
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#endif
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return BOOT_DEVICE_MMC1;
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}
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#ifdef CONFIG_SPL_MMC_SUPPORT
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static int configure_emmc(struct udevice *pinctrl)
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{
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#if defined(CONFIG_TARGET_CHROMEBOOK_JERRY)
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struct gpio_desc desc;
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int ret;
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pinctrl_request_noflags(pinctrl, PERIPH_ID_EMMC);
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/*
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* TODO(sjg@chromium.org): Pick this up from device tree or perhaps
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* use the EMMC_PWREN setting.
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*/
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ret = dm_gpio_lookup_name("D9", &desc);
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if (ret) {
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debug("gpio ret=%d\n", ret);
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return ret;
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}
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ret = dm_gpio_request(&desc, "emmc_pwren");
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if (ret) {
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debug("gpio_request ret=%d\n", ret);
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return ret;
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}
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ret = dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
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if (ret) {
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debug("gpio dir ret=%d\n", ret);
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return ret;
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}
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ret = dm_gpio_set_value(&desc, 1);
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if (ret) {
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debug("gpio value ret=%d\n", ret);
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return ret;
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}
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#endif
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return 0;
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}
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#endif
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#if !defined(CONFIG_SPL_OF_PLATDATA)
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static int phycore_init(void)
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{
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struct udevice *pmic;
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int ret;
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ret = uclass_first_device_err(UCLASS_PMIC, &pmic);
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if (ret)
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return ret;
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#if defined(CONFIG_SPL_POWER_SUPPORT)
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/* Increase USB input current to 2A */
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ret = rk818_spl_configure_usb_input_current(pmic, 2000);
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if (ret)
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return ret;
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/* Close charger when USB lower then 3.26V */
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ret = rk818_spl_configure_usb_chrg_shutdown(pmic, 3260000);
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if (ret)
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return ret;
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#endif
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return 0;
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}
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#endif
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void board_init_f(ulong dummy)
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{
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struct udevice *pinctrl;
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struct udevice *dev;
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int ret;
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/* Example code showing how to enable the debug UART on RK3288 */
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#include <asm/arch/grf_rk3288.h>
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/* Enable early UART on the RK3288 */
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#define GRF_BASE 0xff770000
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struct rk3288_grf * const grf = (void *)GRF_BASE;
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rk_clrsetreg(&grf->gpio7ch_iomux, GPIO7C7_MASK << GPIO7C7_SHIFT |
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GPIO7C6_MASK << GPIO7C6_SHIFT,
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GPIO7C7_UART2DBG_SOUT << GPIO7C7_SHIFT |
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GPIO7C6_UART2DBG_SIN << GPIO7C6_SHIFT);
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/*
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* Debug UART can be used from here if required:
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*
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* debug_uart_init();
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* printch('a');
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* printhex8(0x1234);
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* printascii("string");
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*/
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debug_uart_init();
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debug("\nspl:debug uart enabled in %s\n", __func__);
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ret = spl_early_init();
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if (ret) {
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debug("spl_early_init() failed: %d\n", ret);
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hang();
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}
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rockchip_timer_init();
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configure_l2ctlr();
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ret = rockchip_get_clk(&dev);
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if (ret) {
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debug("CLK init failed: %d\n", ret);
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return;
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}
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ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
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if (ret) {
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debug("Pinctrl init failed: %d\n", ret);
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return;
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}
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#if !defined(CONFIG_SPL_OF_PLATDATA)
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if (of_machine_is_compatible("phytec,rk3288-phycore-som")) {
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ret = phycore_init();
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if (ret) {
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debug("Failed to set up phycore power settings: %d\n",
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ret);
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return;
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}
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}
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#endif
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#if !defined(CONFIG_SUPPORT_TPL)
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debug("\nspl:init dram\n");
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ret = uclass_get_device(UCLASS_RAM, 0, &dev);
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if (ret) {
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debug("DRAM init failed: %d\n", ret);
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return;
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}
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#endif
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#if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT)
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back_to_bootrom(BROM_BOOT_NEXTSTAGE);
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#endif
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}
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static int setup_led(void)
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{
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#ifdef CONFIG_SPL_LED
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struct udevice *dev;
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char *led_name;
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int ret;
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led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led");
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if (!led_name)
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return 0;
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ret = led_get_by_label(led_name, &dev);
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if (ret) {
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debug("%s: get=%d\n", __func__, ret);
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return ret;
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}
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ret = led_set_on(dev, 1);
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if (ret)
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return ret;
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#endif
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return 0;
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}
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void spl_board_init(void)
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{
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struct udevice *pinctrl;
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int ret;
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ret = setup_led();
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if (ret) {
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debug("LED ret=%d\n", ret);
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hang();
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}
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ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
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if (ret) {
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debug("%s: Cannot find pinctrl device\n", __func__);
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goto err;
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}
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#ifdef CONFIG_SPL_MMC_SUPPORT
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ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD);
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if (ret) {
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debug("%s: Failed to set up SD card\n", __func__);
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goto err;
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}
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ret = configure_emmc(pinctrl);
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if (ret) {
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debug("%s: Failed to set up eMMC\n", __func__);
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goto err;
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}
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#endif
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/* Enable debug UART */
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ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG);
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if (ret) {
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debug("%s: Failed to set up console UART\n", __func__);
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goto err;
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}
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preloader_console_init();
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#if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM)
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back_to_bootrom(BROM_BOOT_NEXTSTAGE);
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#endif
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return;
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err:
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printf("spl_board_init: Error %d\n", ret);
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/* No way to report error here */
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hang();
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}
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#ifdef CONFIG_SPL_OS_BOOT
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#define PMU_BASE 0xff730000
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int dram_init_banksize(void)
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{
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struct rk3288_pmu *const pmu = (void *)PMU_BASE;
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size_t size = rockchip_sdram_size((phys_addr_t)&pmu->sys_reg[2]);
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gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
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gd->bd->bi_dram[0].size = size;
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return 0;
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}
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#endif
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