Instead of calling the northbridge and PCH init from bd82x6x_init_extra() when the PCI bus is probed, call it from the respective drivers. Also drop the Northbridge init as it has no effect. The registers it touches appear to be read-only.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v2: None
arch/x86/cpu/ivybridge/bd82x6x.c | 42 --------------------------- arch/x86/cpu/ivybridge/northbridge.c | 16 +++++++--- arch/x86/include/asm/arch-ivybridge/bd82x6x.h | 1 - board/google/chromebook_link/link.c | 8 ----- 4 files changed, 12 insertions(+), 55 deletions(-)
diff --git a/arch/x86/cpu/ivybridge/bd82x6x.c b/arch/x86/cpu/ivybridge/bd82x6x.c index 149c1d2..c5a5d4d 100644 --- a/arch/x86/cpu/ivybridge/bd82x6x.c +++ b/arch/x86/cpu/ivybridge/bd82x6x.c @@ -18,45 +18,6 @@
#define BIOS_CTRL 0xdc
-void bd82x6x_pci_init(pci_dev_t dev) -{ - u16 reg16; - u8 reg8; - - debug("bd82x6x PCI init.\n"); - /* Enable Bus Master */ - reg16 = x86_pci_read_config16(dev, PCI_COMMAND); - reg16 |= PCI_COMMAND_MASTER; - x86_pci_write_config16(dev, PCI_COMMAND, reg16); - - /* This device has no interrupt */ - x86_pci_write_config8(dev, INTR, 0xff); - - /* disable parity error response and SERR */ - reg16 = x86_pci_read_config16(dev, BCTRL); - reg16 &= ~(1 << 0); - reg16 &= ~(1 << 1); - x86_pci_write_config16(dev, BCTRL, reg16); - - /* Master Latency Count must be set to 0x04! */ - reg8 = x86_pci_read_config8(dev, SMLT); - reg8 &= 0x07; - reg8 |= (0x04 << 3); - x86_pci_write_config8(dev, SMLT, reg8); - - /* Will this improve throughput of bus masters? */ - x86_pci_write_config8(dev, PCI_MIN_GNT, 0x06); - - /* Clear errors in status registers */ - reg16 = x86_pci_read_config16(dev, PSTS); - /* reg16 |= 0xf900; */ - x86_pci_write_config16(dev, PSTS, reg16); - - reg16 = x86_pci_read_config16(dev, SECSTS); - /* reg16 |= 0xf900; */ - x86_pci_write_config16(dev, SECSTS, reg16); -} - static int bd82x6x_probe(struct udevice *dev) { const void *blob = gd->fdt_blob; @@ -108,10 +69,7 @@ int bd82x6x_init_extra(void) return -EINVAL; }
- bd82x6x_pci_init(PCH_DEV); bd82x6x_sata_enable(PCH_SATA_DEV, blob, sata_node); - northbridge_enable(PCH_DEV); - northbridge_init(PCH_DEV);
return 0; } diff --git a/arch/x86/cpu/ivybridge/northbridge.c b/arch/x86/cpu/ivybridge/northbridge.c index 6b00d31..2eed0af 100644 --- a/arch/x86/cpu/ivybridge/northbridge.c +++ b/arch/x86/cpu/ivybridge/northbridge.c @@ -197,15 +197,12 @@ static void sandybridge_setup_northbridge_bars(struct udevice *dev) dm_pci_write_config8(dev, PAM6, 0x33); }
-static int bd82x6x_northbridge_probe(struct udevice *dev) +static int bd82x6x_northbridge_early_init(struct udevice *dev) { const int chipset_type = SANDYBRIDGE_MOBILE; u32 capid0_a; u8 reg8;
- if (gd->flags & GD_FLG_RELOC) - return 0; - /* Device ID Override Enable should be done very early */ dm_pci_read_config32(dev, 0xe4, &capid0_a); if (capid0_a & (1 << 10)) { @@ -226,6 +223,17 @@ static int bd82x6x_northbridge_probe(struct udevice *dev) return 0; }
+static int bd82x6x_northbridge_probe(struct udevice *dev) +{ + if (!(gd->flags & GD_FLG_RELOC)) + return bd82x6x_northbridge_early_init(dev); + + northbridge_enable(PCH_DEV); + northbridge_init(PCH_DEV); + + return 0; +} + static const struct udevice_id bd82x6x_northbridge_ids[] = { { .compatible = "intel,bd82x6x-northbridge" }, { } diff --git a/arch/x86/include/asm/arch-ivybridge/bd82x6x.h b/arch/x86/include/asm/arch-ivybridge/bd82x6x.h index fc7fc6d..0f4fe47 100644 --- a/arch/x86/include/asm/arch-ivybridge/bd82x6x.h +++ b/arch/x86/include/asm/arch-ivybridge/bd82x6x.h @@ -9,7 +9,6 @@
void bd82x6x_sata_init(pci_dev_t dev, const void *blob, int node); void bd82x6x_sata_enable(pci_dev_t dev, const void *blob, int node); -void bd82x6x_pci_init(pci_dev_t dev); void bd82x6x_usb_ehci_init(pci_dev_t dev); void bd82x6x_usb_xhci_init(pci_dev_t dev); int gma_func0_init(struct udevice *dev, const void *blob, int node); diff --git a/board/google/chromebook_link/link.c b/board/google/chromebook_link/link.c index 1b97a8f..d12d742 100644 --- a/board/google/chromebook_link/link.c +++ b/board/google/chromebook_link/link.c @@ -14,14 +14,6 @@
int arch_early_init_r(void) { - struct udevice *dev; - int ret; - - /* Make sure the platform controller hub is up and running */ - ret = uclass_get_device(UCLASS_PCH, 0, &dev); - if (ret) - return ret; - return 0; }