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Add new option 'sata_mode' to CMOS and 'SATA_MODE' to Kconfig for AMD SB600

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coreboot used to set the chipset to IDE mode unconditionally.
Now, the user has a couple of ways to choose the configuration:
- If a CMOS variable sata_mode exist, it is used to decide if IDE or
  AHCI is to be used as interface.
- If not, a Kconfig option is used.
- If unchanged, the Kconfig option is set to IDE.

So unless the cmos.layout is extended or Kconfig is modified, this won't
change behaviour.

[Patrick: Compared to Josef's version, I changed the Kconfig option to
be boolean, instead of a magic string. Also, the "IDE" default is
handled in Kconfig, instead of an additional line of code.]

Signed-off-by: Josef Kellermann <seppk@arcor.de>
Acked-by: Patrick Georgi <patrick.georgi@secunet.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6379 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Josef Kellermann
2011-02-24 13:54:10 +00:00
committed by Patrick Georgi
parent 20bd19619e
commit 855224bb28
2 changed files with 42 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
src/southbridge/amd/sb600/Kconfig
View File

@@ -23,16 +23,36 @@ config SOUTHBRIDGE_AMD_SB600
select HAVE_USBDEBUG
select TINY_BOOTBLOCK
if SOUTHBRIDGE_AMD_SB600
config BOOTBLOCK_SOUTHBRIDGE_INIT
string
default "southbridge/amd/sb600/bootblock.c"
depends on SOUTHBRIDGE_AMD_SB600
config EHCI_BAR
hex
default 0xfef00000 if SOUTHBRIDGE_AMD_SB600
default 0xfef00000
config EHCI_DEBUG_OFFSET
hex
default 0xe0 if SOUTHBRIDGE_AMD_SB600
default 0xe0
choice
prompt "SATA Mode"
default SATA_MODE_IDE
help
Select the mode in which SATA should be driven. IDE or AHCI.
The default is IDE.
config SATA_MODE_IDE
bool "IDE"
config SATA_MODE_AHCI
bool "AHCI"
endchoice
config SATA_MODE
int
default 1 if SATA_MODE_IDE
default 0 if SATA_MODE_AHCI
endif

26
src/southbridge/amd/sb600/sata.c
View File

@@ -26,6 +26,10 @@
#include <device/pci_ops.h>
#include <arch/io.h>
#include "sb600.h"
#include <pc80/mc146818rtc.h>
#define SATA_MODE_IDE 1
#define SATA_MODE_AHCI 0
static int sata_drive_detect(int portnum, u16 iobar)
{
@@ -98,10 +102,6 @@ static void sata_init(struct device *dev)
printk(BIOS_SPEW, "sata_bar4=%x\n", sata_bar4); /* 3000 */
printk(BIOS_SPEW, "sata_bar5=%x\n", sata_bar5); /* e0309000 */
/* Program the 2C to 0x43801002 */
dword = 0x43801002;
pci_write_config32(dev, 0x2c, dword);
/* SERR-Enable */
word = pci_read_config16(dev, 0x04);
word |= (1 << 8);
@@ -112,13 +112,25 @@ static void sata_init(struct device *dev)
byte |= (1 << 2);
pci_write_config8(dev, 0x40, byte);
/* Set SATA Operation Mode, Set to IDE mode */
/* Set SATA Operation Mode */
byte = pci_read_config8(dev, 0x40);
byte |= (1 << 0);
byte |= (1 << 4);
pci_write_config8(dev, 0x40, byte);
dword = 0x01018f00;
// 1 means IDE, 0 means AHCI
if( get_option(&i, "sata_mode") < 0 ) {
// no cmos option
i = CONFIG_SATA_MODE;
}
printk(BIOS_INFO, "%s: setting sata mode = %s\n", __func__, (i == SATA_MODE_IDE)?"ide":"ahci" );
dword = pci_read_config32(dev, 0x8);
dword &= 0xff0000ff;
if (i == SATA_MODE_IDE)
dword |= 0x00018f00; // IDE mode
else
dword |= 0x00060100; // AHCI mode
pci_write_config32(dev, 0x8, dword);
byte = pci_read_config8(dev, 0x40);
@@ -245,7 +257,7 @@ static void sata_init(struct device *dev)
}
static struct pci_operations lops_pci = {
/* .set_subsystem = pci_dev_set_subsystem, */
.set_subsystem = pci_dev_set_subsystem,
};
static struct device_operations sata_ops = {