mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-02 09:30:10 +00:00
ae5a3659f3
We prefer to use ARM arch timer instead of rockchip timer, so that we are using the same timer for SPL, U-Boot and Kernel, which will make things simple and easy to track to boot time. Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
89 lines
1.8 KiB
C
89 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Amarula Solutions
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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 <ram.h>
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#include <spl.h>
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#include <version.h>
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#include <asm/io.h>
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#include <asm/arch-rockchip/bootrom.h>
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#include <asm/arch-rockchip/clock.h>
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#define TIMER_LOAD_COUNT_L 0x00
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#define TIMER_LOAD_COUNT_H 0x04
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#define TIMER_CONTROL_REG 0x10
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#define TIMER_EN 0x1
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#define TIMER_FMODE BIT(0)
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#define TIMER_RMODE BIT(1)
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void rockchip_stimer_init(void)
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{
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asm volatile("mcr p15, 0, %0, c14, c0, 0"
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: : "r"(COUNTER_FREQUENCY));
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writel(0, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_CONTROL_REG);
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writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE);
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writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE + 4);
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writel(TIMER_EN | TIMER_FMODE, CONFIG_ROCKCHIP_STIMER_BASE +
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TIMER_CONTROL_REG);
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}
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void board_init_f(ulong dummy)
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{
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struct udevice *dev;
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int ret;
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#ifdef CONFIG_DEBUG_UART
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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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#endif
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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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/* Init secure timer */
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rockchip_stimer_init();
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/* Init ARM arch timer in arch/arm/cpu/armv7/arch_timer.c */
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timer_init();
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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_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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}
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void board_return_to_bootrom(void)
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{
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back_to_bootrom(BROM_BOOT_NEXTSTAGE);
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}
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u32 spl_boot_device(void)
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{
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return BOOT_DEVICE_BOOTROM;
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}
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void spl_board_init(void)
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{
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puts("\nU-Boot TPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
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U_BOOT_TIME ")\n");
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}
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