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https://github.com/brain-hackers/u-boot-brain
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f1683aa73c
This allows us to use the same DRAM init function on all archs. Add a dummy function for arc, which does not use DRAM init here. Signed-off-by: Simon Glass <sjg@chromium.org> [trini: Dummy function on nios2] Signed-off-by: Tom Rini <trini@konsulko.com>
36 lines
625 B
C
36 lines
625 B
C
/*
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* Copyright (C) 2016 Imagination Technologies
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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 <asm/io.h>
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#include "boston-regs.h"
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DECLARE_GLOBAL_DATA_PTR;
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int dram_init(void)
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{
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u32 ddrconf0 = __raw_readl((uint32_t *)BOSTON_PLAT_DDRCONF0);
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gd->ram_size = (phys_size_t)(ddrconf0 & BOSTON_PLAT_DDRCONF0_SIZE) <<
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30;
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return 0;
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}
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ulong board_get_usable_ram_top(ulong total_size)
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{
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DECLARE_GLOBAL_DATA_PTR;
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if (gd->ram_top < CONFIG_SYS_SDRAM_BASE) {
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/* 2GB wrapped around to 0 */
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return CKSEG0ADDR(256 << 20);
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}
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return min_t(unsigned long, gd->ram_top, CKSEG0ADDR(256 << 20));
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}
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