mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-26 04:49:42 +09:00
df9041ec72
The rk3188 needs 3 U-Boot stages: a tpl living in 1KB of sram, a spl the resides in the rest of the sram and loads the regular U-Boot living in regular ram. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Kever Yang <kever.yang@rock-chips.com>
72 lines
1.3 KiB
C
72 lines
1.3 KiB
C
/*
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* (C) Copyright 2015 Google, Inc
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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 <clk.h>
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#include <dm.h>
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#include <ram.h>
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#include <syscon.h>
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#include <asm/io.h>
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#include <asm/arch/clock.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/boot_mode.h>
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#include <asm/gpio.h>
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#include <dm/pinctrl.h>
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DECLARE_GLOBAL_DATA_PTR;
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int board_init(void)
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{
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#if defined(CONFIG_ROCKCHIP_SPL_BACK_TO_BROM)
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struct udevice *pinctrl;
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int ret;
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/*
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* We need to implement sdcard iomux here for the further
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* initialization, otherwise, it'll hit sdcard command sending
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* timeout exception.
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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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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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return 0;
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err:
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printf("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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return -1;
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#else
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return 0;
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#endif
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}
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int dram_init(void)
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{
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/* FIXME: read back ram size from sys_reg2 */
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gd->ram_size = 0x40000000;
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return 0;
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}
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#ifndef CONFIG_SYS_DCACHE_OFF
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void enable_caches(void)
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{
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/* Enable D-cache. I-cache is already enabled in start.S */
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dcache_enable();
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}
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#endif
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