mirror of
https://github.com/brain-hackers/u-boot-brain
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532cb7f5ad
Since the size of SPL can't be exceeded 0x8000 bytes in RK3288, it is not possible add new SPL features like Falcon mode or etc. So add TPL stage so-that adding new features to SPL is possible. - TPL: DRAM init, clocks - SPL: MMC, falcon, etc Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
85 lines
1.6 KiB
C
85 lines
1.6 KiB
C
/*
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* Copyright (C) 2017 Amarula Solutions
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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 <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/bootrom.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/grf_rk3288.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/sys_proto.h>
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#include <asm/arch/timer.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define GRF_BASE 0xff770000
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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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/* Example code showing how to enable the debug UART on RK3288 */
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/* Enable early UART on the RK3288 */
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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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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_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();
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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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