mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-25 12:29:44 +09:00
49d5ff439c
At present in arch_setup_gd() it calls printch(' ') at the end which
has been a mystery for a long time as without such call the 64-bit
U-Boot just does not boot at all.
In fact this is due to the bug that board_init_f() was called with
boot_flags not being set. Hence whatever value being there in the
rdi register becomes the boot_flags if without such magic call.
With a printch(' ') call the rdi register is initialized as 0x20
and this value seems to be sane enough for the whole boot process.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
64 lines
925 B
C
64 lines
925 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2016 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <debug_uart.h>
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/*
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* Global declaration of gd.
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*
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* As we write to it before relocation we have to make sure it is not put into
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* a .bss section which may overlap a .rela section. Initialization forces it
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* into a .data section which cannot overlap any .rela section.
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*/
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struct global_data *global_data_ptr = (struct global_data *)~0;
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void arch_setup_gd(gd_t *new_gd)
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{
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global_data_ptr = new_gd;
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}
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int cpu_has_64bit(void)
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{
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return true;
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}
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void enable_caches(void)
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{
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/* Not implemented */
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}
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void disable_caches(void)
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{
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/* Not implemented */
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}
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int dcache_status(void)
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{
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return true;
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}
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int x86_mp_init(void)
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{
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/* Not implemented */
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return 0;
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}
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int misc_init_r(void)
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{
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return 0;
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}
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int checkcpu(void)
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{
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return 0;
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}
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int print_cpuinfo(void)
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{
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return 0;
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}
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