mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 17:08:52 +09:00
9704f23b00
The prefix PCH was taken from ivybridge port. However Queensbay platform official document does not mention PCH. It is composed of TunnelCreek processor and Topcliff IOH chipset. For accuracy, avoid using PCH prefix in the macro. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
46 lines
758 B
C
46 lines
758 B
C
/*
|
|
* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/pci.h>
|
|
#include <asm/post.h>
|
|
#include <asm/arch/tnc.h>
|
|
#include <asm/fsp/fsp_support.h>
|
|
#include <asm/processor.h>
|
|
|
|
static void unprotect_spi_flash(void)
|
|
{
|
|
u32 bc;
|
|
|
|
bc = x86_pci_read_config32(TNC_LPC, 0xd8);
|
|
bc |= 0x1; /* unprotect the flash */
|
|
x86_pci_write_config32(TNC_LPC, 0xd8, bc);
|
|
}
|
|
|
|
int arch_cpu_init(void)
|
|
{
|
|
struct pci_controller *hose;
|
|
int ret;
|
|
|
|
post_code(POST_CPU_INIT);
|
|
#ifdef CONFIG_SYS_X86_TSC_TIMER
|
|
timer_set_base(rdtsc());
|
|
#endif
|
|
|
|
ret = x86_cpu_init_f();
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = pci_early_init_hose(&hose);
|
|
if (ret)
|
|
return ret;
|
|
|
|
unprotect_spi_flash();
|
|
|
|
return 0;
|
|
}
|