mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 08:58:52 +09:00
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
![]() |
/*
|
||
|
* From coreboot southbridge/intel/bd82x6x/lpc.c
|
||
|
*
|
||
|
* Copyright (C) 2008-2009 coresystems GmbH
|
||
|
*
|
||
|
* SPDX-License-Identifier: GPL-2.0
|
||
|
*/
|
||
|
|
||
|
#include <common.h>
|
||
|
#include <errno.h>
|
||
|
#include <fdtdec.h>
|
||
|
#include <pci.h>
|
||
|
#include <asm/pci.h>
|
||
|
#include <asm/arch/pch.h>
|
||
|
|
||
|
int lpc_early_init(const void *blob, int node, pci_dev_t dev)
|
||
|
{
|
||
|
struct reg_info {
|
||
|
u32 base;
|
||
|
u32 size;
|
||
|
} values[4], *ptr;
|
||
|
int count;
|
||
|
int i;
|
||
|
|
||
|
count = fdtdec_get_int_array_count(blob, node, "gen-dec",
|
||
|
(u32 *)values, sizeof(values) / sizeof(u32));
|
||
|
if (count < 0)
|
||
|
return -EINVAL;
|
||
|
|
||
|
/* Set COM1/COM2 decode range */
|
||
|
pci_write_config16(dev, LPC_IO_DEC, 0x0010);
|
||
|
|
||
|
/* Enable PS/2 Keyboard/Mouse, EC areas and COM1 */
|
||
|
pci_write_config16(dev, LPC_EN, KBC_LPC_EN | MC_LPC_EN |
|
||
|
GAMEL_LPC_EN | COMA_LPC_EN);
|
||
|
|
||
|
/* Write all registers but use 0 if we run out of data */
|
||
|
count = count * sizeof(u32) / sizeof(values[0]);
|
||
|
for (i = 0, ptr = values; i < ARRAY_SIZE(values); i++, ptr++) {
|
||
|
u32 reg = 0;
|
||
|
|
||
|
if (i < count)
|
||
|
reg = ptr->base | PCI_COMMAND_IO | (ptr->size << 16);
|
||
|
pci_write_config32(dev, LPC_GENX_DEC(i), reg);
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|