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authorArthur Heymans <arthur@aheymans.xyz>2016-11-30 20:37:29 +0100
committerNico Huber <nico.h@gmx.de>2017-03-21 20:12:07 +0100
commitbb5e77c4787c7bbf079d084087143c5ca85fdcc3 (patch)
treeffdf8d9fe89d3ab95e00ea879c2616c0863e5d86 /src/northbridge
parent70a1dda927951e3d3a163ee899f25420f78b56c1 (diff)
nb/x4x: Move checkreset before SPD reading
It makes no sense to read SPDs if the system will reset anyway. Change-Id: Id2ad9b04860b3e4939a149eef6b619a496179ff8 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/17661 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'src/northbridge')
-rw-r--r--src/northbridge/intel/x4x/raminit.c37
-rw-r--r--src/northbridge/intel/x4x/raminit_ddr2.c38
2 files changed, 37 insertions, 38 deletions
diff --git a/src/northbridge/intel/x4x/raminit.c b/src/northbridge/intel/x4x/raminit.c
index 639b5b15ab..7d352f11d3 100644
--- a/src/northbridge/intel/x4x/raminit.c
+++ b/src/northbridge/intel/x4x/raminit.c
@@ -302,6 +302,41 @@ static void sdram_detect_ram_speed(struct sysinfo *s)
}
}
+static void checkreset_ddr2(int boot_path)
+{
+ u8 pmcon2;
+ u32 pmsts;
+
+ if (boot_path >= 1) {
+ pmsts = MCHBAR32(PMSTS_MCHBAR);
+ if (!(pmsts & 1))
+ printk(BIOS_DEBUG,
+ "Channel 0 possibly not in self refresh\n");
+ if (!(pmsts & 2))
+ printk(BIOS_DEBUG,
+ "Channel 1 possibly not in self refresh\n");
+ }
+
+ pmcon2 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa2);
+
+ if (pmcon2 & 0x80) {
+ pmcon2 &= ~0x80;
+ pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, pmcon2);
+
+ /* do magic 0xf0 thing. */
+ u8 reg8 = pci_read_config8(PCI_DEV(0, 0, 0), 0xf0);
+ pci_write_config8(PCI_DEV(0, 0, 0), 0xf0, reg8 & ~(1 << 2));
+ reg8 = pci_read_config8(PCI_DEV(0, 0, 0), 0xf0);
+ pci_write_config8(PCI_DEV(0, 0, 0), 0xf0, reg8 | (1 << 2));
+
+ printk(BIOS_DEBUG, "Reset...\n");
+ outb(0x6, 0xcf9);
+ asm ("hlt");
+ }
+ pmcon2 |= 0x80;
+ pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, pmcon2);
+}
+
/**
* @param boot_path: 0 = normal, 1 = reset, 2 = resume from s3
*/
@@ -322,6 +357,8 @@ void sdram_initialize(int boot_path, const u8 *spd_map)
s.spd_map[2] = spd_map[2];
s.spd_map[3] = spd_map[3];
+ checkreset_ddr2(s.boot_path);
+
/* Detect dimms per channel */
s.dimms_per_ch = 2;
reg8 = pci_read_config8(PCI_DEV(0, 0, 0), 0xe9);
diff --git a/src/northbridge/intel/x4x/raminit_ddr2.c b/src/northbridge/intel/x4x/raminit_ddr2.c
index e8bb01196e..eca7189145 100644
--- a/src/northbridge/intel/x4x/raminit_ddr2.c
+++ b/src/northbridge/intel/x4x/raminit_ddr2.c
@@ -259,41 +259,6 @@ static void clkcross_ddr2(struct sysinfo *s)
MCHBAR32(0x70c) = clkxtab[i][j][12];
}
-static void checkreset_ddr2(struct sysinfo *s)
-{
- u8 pmcon2;
- u32 pmsts;
-
- if (s->boot_path >= 1) {
- pmsts = MCHBAR32(PMSTS_MCHBAR);
- if (!(pmsts & 1))
- printk(BIOS_DEBUG,
- "Channel 0 possibly not in self refresh\n");
- if (!(pmsts & 2))
- printk(BIOS_DEBUG,
- "Channel 1 possibly not in self refresh\n");
- }
-
- pmcon2 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa2);
-
- if (pmcon2 & 0x80) {
- pmcon2 &= ~0x80;
- pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, pmcon2);
-
- /* do magic 0xf0 thing. */
- u8 reg8 = pci_read_config8(PCI_DEV(0, 0, 0), 0xf0);
- pci_write_config8(PCI_DEV(0, 0, 0), 0xf0, reg8 & ~(1 << 2));
- reg8 = pci_read_config8(PCI_DEV(0, 0, 0), 0xf0);
- pci_write_config8(PCI_DEV(0, 0, 0), 0xf0, reg8 | (1 << 2));
-
- printk(BIOS_DEBUG, "Reset...\n");
- outb(0x6, 0xcf9);
- asm ("hlt");
- }
- pmcon2 |= 0x80;
- pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa2, pmcon2);
-}
-
static void setioclk_ddr2(struct sysinfo *s)
{
MCHBAR32(0x1bc) = 0x08060402;
@@ -1937,9 +1902,6 @@ void raminit_ddr2(struct sysinfo *s)
// Select timings based on SPD info
sdram_detect_smallest_params2(s);
- // Reset if required
- checkreset_ddr2(s);
-
if (s->boot_path != BOOT_PATH_WARM_RESET) {
// Clear self refresh
MCHBAR32(PMSTS_MCHBAR) = MCHBAR32(PMSTS_MCHBAR)