mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-31 23:33:44 +09:00
bccf09e0e1
Commitsb61e90e6fd("sh: Drop the arch-specific board init") andf41e6088eb("sh: Fix build errors for generic board") left code and data relocation done in start.S, however further actual U-boot configuration is not started anymore. Practically SH boards with the code relocated into the expected position by start.S still can be booted, so the change adds this option and provides an option how to relocate code for board_init_r() execution. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
86 lines
1.2 KiB
C
86 lines
1.2 KiB
C
/*
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* Copyright (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
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* Copyright (C) 2008 Renesas Solutions Corp.
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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 <command.h>
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#include <asm/processor.h>
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#include <asm/io.h>
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#define STBCR4 0xFFFE040C
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#define cmt_clock_enable() do {\
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writeb(readb(STBCR4) & ~0x04, STBCR4);\
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} while (0)
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#define scif0_enable() do {\
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writeb(readb(STBCR4) & ~0x80, STBCR4);\
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} while (0)
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#define scif3_enable() do {\
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writeb(readb(STBCR4) & ~0x10, STBCR4);\
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} while (0)
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int checkcpu(void)
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{
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puts("CPU: SH2\n");
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return 0;
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}
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int cpu_init(void)
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{
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/* SCIF enable */
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#if defined(CONFIG_CONS_SCIF3)
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scif3_enable();
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#else
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scif0_enable();
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#endif
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/* CMT clock enable */
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cmt_clock_enable() ;
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return 0;
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}
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int cleanup_before_linux(void)
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{
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disable_interrupts();
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return 0;
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}
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int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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disable_interrupts();
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reset_cpu(0);
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return 0;
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}
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void flush_cache(unsigned long addr, unsigned long size)
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{
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}
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void icache_enable(void)
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{
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}
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void icache_disable(void)
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{
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}
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int icache_status(void)
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{
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return 0;
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}
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void dcache_enable(void)
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{
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}
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void dcache_disable(void)
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{
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}
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int dcache_status(void)
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{
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return 0;
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}
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