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AMD Hudson: show POST codes on a PCI device 

Show POST codes on a PCI device: implement hudson_pci_port80().
Remove the comments that use pci_locate_device():
using the code found in the comment seems to break booting.

This shares much code with sb600/sb700/sb800,
however the deduplication work needs to be discusses somewhere else
than in this review board.

Tested on an Asus F2A85-M.
The contribution is (C) by Rudolf Marek.

Change-Id: I54fb1dcb0614452c775ed70d867ab44ff263a61a
Author: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-on: http://review.coreboot.org/4559
Tested-by: build bot (Jenkins)
Reviewed-by: Rudolf Marek <r.marek@assembler.cz>
This commit is contained in:
Idwer Vollering 2014-01-06 21:57:56 +00:00 committed by Rudolf Marek
parent be8d23a3b5
commit c18e52122d
1 changed files with 47 additions and 2 deletions
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49
src/southbridge/amd/agesa/hudson/early_setup.c
View File

@ -29,6 +29,51 @@
#include <cbmem.h>
#include "hudson.h"
void hudson_pci_port80(void)
{
u8 byte;
device_t dev;
/* P2P Bridge */
dev = PCI_DEV(0, 0x14, 4);
/* Chip Control: Enable subtractive decoding */
byte = pci_read_config8(dev, 0x40);
byte |= 1 << 5;
pci_write_config8(dev, 0x40, byte);
/* Misc Control: Enable subtractive decoding if 0x40 bit 5 is set */
byte = pci_read_config8(dev, 0x4B);
byte |= 1 << 7;
pci_write_config8(dev, 0x4B, byte);
/* The same IO Base and IO Limit here is meaningful because we set the
* bridge to be subtractive. During early setup stage, we have to make
* sure that data can go through port 0x80.
*/
/* IO Base: 0xf000 */
byte = pci_read_config8(dev, 0x1C);
byte |= 0xF << 4;
pci_write_config8(dev, 0x1C, byte);
/* IO Limit: 0xf000 */
byte = pci_read_config8(dev, 0x1D);
byte |= 0xF << 4;
pci_write_config8(dev, 0x1D, byte);
/* PCI Command: Enable IO response */
byte = pci_read_config8(dev, 0x04);
byte |= 1 << 0;
pci_write_config8(dev, 0x04, byte);
/* LPC controller */
dev = PCI_DEV(0, 0x14, 3);
byte = pci_read_config8(dev, 0x4A);
byte &= ~(1 << 5); /* disable lpc port 80 */
pci_write_config8(dev, 0x4A, byte);
}
void hudson_lpc_port80(void)
{
u8 byte;
@ -42,9 +87,9 @@ void hudson_lpc_port80(void)
outb(byte, 0xCD7);
/* Enable port 80 LPC decode in pci function 3 configuration space. */
dev = PCI_DEV(0, 0x14, 3);//pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
dev = PCI_DEV(0, 0x14, 3);
byte = pci_read_config8(dev, 0x4a);
byte |= 1 << 5; /* enable port 80 */
byte |= 1 << 5; /* enable port 80 */
pci_write_config8(dev, 0x4a, byte);
}