GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add PCIe init and NMode flag to PEI data structure 

The IvyBridge reference code does some slow and
extensive PCIe init that we do not need on Link.
Hence, add a flag to disable/enable running that
init code from coreboot.

NMode was used during bringup. We'll switch
the setting back to auto, to let MRC decide the right thing.

Change-Id: Ia989bb9ea079aadfeb41dc3029b7c2c623e84760
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1826
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martin@se-eng.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Stefan Reinauer 2012-09-04 10:59:29 -07:00 committed by Ronald G. Minnich
parent e8179b5138
commit 7e8c8e92bb
1 changed files with 12 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
src/northbridge/intel/sandybridge/pei_data.h
View File

@ -31,7 +31,7 @@
#define PEI_DATA_H
typedef void (*tx_byte_func)(unsigned char byte);
#define PEI_VERSION 3
#define PEI_VERSION 4
struct pei_data
{
uint32_t pei_version;
@ -99,6 +99,17 @@ struct pei_data
uint8_t spd_data[4][256];
tx_byte_func tx_byte;
int ddr3lv_support;
/* pcie_init needs to be set to 1 to have the system agent initialize
* PCIe. Note: This should only be required if your system has Gen3 devices
* and it will increase your boot time by at least 100ms.
*/
int pcie_init;
/* N mode functionality. Leave this setting at 0.
* 0 Auto
* 1 1N
* 2 2N
*/
int nmode;
} __attribute__((packed));
#endif