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https://source.denx.de/u-boot/u-boot.git
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3fb8016360
Intention behind this work was elimination of as much assembly-written code as it is possible. In case of ARC we already have relocation fix-up implemented in C so why don't we use C for U-Boot copying, .bss zeroing etc. It turned out x86 uses pretty similar approach so we re-used parts of code in "board_f.c" initially implemented for x86. Now assembly usage during init is limited to stack- and frame-pointer setup before and after relocation. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Simon Glass <sjg@chromium.org>
35 lines
666 B
C
35 lines
666 B
C
/*
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* Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
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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/arcregs.h>
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#include <asm/cache.h>
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DECLARE_GLOBAL_DATA_PTR;
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int arch_cpu_init(void)
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{
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timer_init();
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/* In simulation (ISS) "CHIPID" and "ARCNUM" are all "ff" */
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if ((read_aux_reg(ARC_AUX_IDENTITY) & 0xffffff00) == 0xffffff00)
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gd->arch.running_on_hw = 0;
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else
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gd->arch.running_on_hw = 1;
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gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
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gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
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return 0;
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}
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int arch_early_init_r(void)
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{
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gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
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gd->bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
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return 0;
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}
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