mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-22 10:59:43 +09:00
6133683320
Drivers are supposed to be able to close down cleanly. To set a good example, make sandbox shut down its driver model drivers and remove them before exit. It may be desirable to do the same more generally once driver model is more widely-used. This could be done during bootm, before U-Boot jumps to the OS. It seems far too early to make this change. Signed-off-by: Simon Glass <sjg@chromium.org>
73 lines
1.3 KiB
C
73 lines
1.3 KiB
C
/*
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* Copyright (c) 2011 The Chromium OS Authors.
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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 <dm/root.h>
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#include <os.h>
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#include <asm/state.h>
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DECLARE_GLOBAL_DATA_PTR;
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void reset_cpu(ulong ignored)
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{
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if (state_uninit())
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os_exit(2);
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if (dm_uninit())
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os_exit(2);
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/* This is considered normal termination for now */
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os_exit(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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reset_cpu(0);
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return 0;
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}
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/* delay x useconds */
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void __udelay(unsigned long usec)
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{
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os_usleep(usec);
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}
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unsigned long __attribute__((no_instrument_function)) timer_get_us(void)
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{
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return os_get_nsec() / 1000;
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}
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int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
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{
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if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
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bootstage_mark(BOOTSTAGE_ID_RUN_OS);
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printf("## Transferring control to Linux (at address %08lx)...\n",
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images->ep);
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reset_cpu(0);
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}
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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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return 0;
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}
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void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
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{
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return (void *)(gd->arch.ram_buf + paddr);
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}
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phys_addr_t map_to_sysmem(const void *ptr)
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{
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return (u8 *)ptr - gd->arch.ram_buf;
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}
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void flush_dcache_range(unsigned long start, unsigned long stop)
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{
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}
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