Stefan Reinauer ([email protected]) just uploaded a new patch set to 
gerrit, which you can find at http://review.coreboot.org/2680

-gerrit

commit 3584a9b36e56bf2c3dcb6365c146c5fa1db141ee
Author: Duncan Laurie <[email protected]>
Date:   Wed Dec 19 09:12:31 2012 -0800

    haswell: more ULT/LP support and minor tweaks
    
    - Add ME device ID for Lynxpoint LP
    - Add GPU device IDs for ULT
    - SATA init tweaks from checking against DXE reference code
    - Remove the ICH7 from the SPI driver so it works on all lynxpoint
    without having to add more LPC device ID checks
    - Add function disable for audio dsp and xhci, remove PCI bridge
    - Add interrupt route registers for new devices (needs romstage setup)
    
    Change-Id: Idb48f50d0bacb6bf90531c3834542b9abb54fb8a
    Signed-off-by: Duncan Laurie <[email protected]>
---
 src/northbridge/intel/haswell/gma.c      |   3 +
 src/southbridge/intel/lynxpoint/me_9.x.c |   8 ++-
 src/southbridge/intel/lynxpoint/pch.c    |  11 ++--
 src/southbridge/intel/lynxpoint/pch.h    |  11 +++-
 src/southbridge/intel/lynxpoint/sata.c   |  35 ++++++++--
 src/southbridge/intel/lynxpoint/spi.c    | 110 ++++---------------------------
 6 files changed, 70 insertions(+), 108 deletions(-)

diff --git a/src/northbridge/intel/haswell/gma.c 
b/src/northbridge/intel/haswell/gma.c
index f791c2b..38fe78a 100644
--- a/src/northbridge/intel/haswell/gma.c
+++ b/src/northbridge/intel/haswell/gma.c
@@ -315,14 +315,17 @@ u32 map_oprom_vendev(u32 vendev)
        case 0x80860402:                /* GT1 Desktop */
        case 0x80860406:                /* GT1 Mobile */
        case 0x8086040a:                /* GT1 Server */
+       case 0x80860a06:                /* GT1 ULT */
 
        case 0x80860412:                /* GT2 Desktop */
        case 0x80860416:                /* GT2 Mobile */
        case 0x8086041a:                /* GT2 Server */
+       case 0x80860a16:                /* GT2 ULT */
 
        case 0x80860422:                /* GT3 Desktop */
        case 0x80860426:                /* GT3 Mobile */
        case 0x8086042a:                /* GT3 Server */
+       case 0x80860a26:                /* GT3 ULT */
 
                new_vendev=0x80860406;  /* GT1 Mobile */
                break;
diff --git a/src/southbridge/intel/lynxpoint/me_9.x.c 
b/src/southbridge/intel/lynxpoint/me_9.x.c
index f2e928a..63b5205 100644
--- a/src/southbridge/intel/lynxpoint/me_9.x.c
+++ b/src/southbridge/intel/lynxpoint/me_9.x.c
@@ -754,10 +754,16 @@ static struct device_operations device_ops = {
        .ops_pci                = &pci_ops,
 };
 
+static const unsigned short pci_device_ids[] = {
+       0x8c3a, /* Mobile */
+       0x9c3a, /* Low Power */
+       0
+};
+
 static const struct pci_driver intel_me __pci_driver = {
        .ops    = &device_ops,
        .vendor = PCI_VENDOR_ID_INTEL,
-       .device = 0x8c3a,
+       .devices= pci_device_ids,
 };
 
 /******************************************************************************
diff --git a/src/southbridge/intel/lynxpoint/pch.c 
b/src/southbridge/intel/lynxpoint/pch.c
index c4a3acf..e992fb2 100644
--- a/src/southbridge/intel/lynxpoint/pch.c
+++ b/src/southbridge/intel/lynxpoint/pch.c
@@ -55,6 +55,12 @@ int pch_silicon_supported(int type, int rev)
 static void pch_hide_devfn(unsigned devfn)
 {
        switch (devfn) {
+       case PCI_DEVFN(19, 0): /* Audio DSP */
+               RCBA32_OR(FD, PCH_DISABLE_ADSPD);
+               break;
+       case PCI_DEVFN(20, 0): /* XHCI */
+               RCBA32_OR(FD, PCH_DISABLE_XHCI);
+               break;
        case PCI_DEVFN(22, 0): /* MEI #1 */
                RCBA32_OR(FD2, PCH_DISABLE_MEI1);
                break;
@@ -89,9 +95,6 @@ static void pch_hide_devfn(unsigned devfn)
        case PCI_DEVFN(29, 0): /* EHCI #1 */
                RCBA32_OR(FD, PCH_DISABLE_EHCI1);
                break;
-       case PCI_DEVFN(30, 0): /* PCI-to-PCI Bridge */
-               RCBA32_OR(FD, PCH_DISABLE_P2P);
-               break;
        case PCI_DEVFN(31, 0): /* LPC */
                RCBA32_OR(FD, PCH_DISABLE_LPC);
                break;
@@ -101,7 +104,7 @@ static void pch_hide_devfn(unsigned devfn)
        case PCI_DEVFN(31, 3): /* SMBUS */
                RCBA32_OR(FD, PCH_DISABLE_SMBUS);
                break;
-       case PCI_DEVFN(31, 5): /* SATA #22 */
+       case PCI_DEVFN(31, 5): /* SATA #2 */
                RCBA32_OR(FD, PCH_DISABLE_SATA2);
                break;
        case PCI_DEVFN(31, 6): /* Thermal Subsystem */
diff --git a/src/southbridge/intel/lynxpoint/pch.h 
b/src/southbridge/intel/lynxpoint/pch.h
index fa8d75f..1de1080 100644
--- a/src/southbridge/intel/lynxpoint/pch.h
+++ b/src/southbridge/intel/lynxpoint/pch.h
@@ -403,6 +403,8 @@ unsigned get_gpios(const int *gpio_num_array);
 #define D22IP_IDERIP   8       /* IDE-R Pin */
 #define D22IP_MEI2IP   4       /* MEI #2 Pin */
 #define D22IP_MEI1IP   0       /* MEI #1 Pin */
+#define D20IP          0x3128  /* 32bit */
+#define D20IP_XHCI     0       /* XHCI Pin */
 #define D31IR          0x3140  /* 16bit */
 #define D30IR          0x3142  /* 16bit */
 #define D29IR          0x3144  /* 16bit */
@@ -410,7 +412,11 @@ unsigned get_gpios(const int *gpio_num_array);
 #define D27IR          0x3148  /* 16bit */
 #define D26IR          0x314c  /* 16bit */
 #define D25IR          0x3150  /* 16bit */
+#define D23IR          0x3158  /* 16bit */
 #define D22IR          0x315c  /* 16bit */
+#define D20IR          0x3160  /* 16bit */
+#define D21IR          0x3164  /* 16bit */
+#define D19IR          0x3168  /* 16bit */
 #define OIC            0x31fe  /* 16bit */
 #define SOFT_RESET_CTRL 0x38f4
 #define SOFT_RESET_DATA 0x38f8
@@ -430,8 +436,8 @@ unsigned get_gpios(const int *gpio_num_array);
 #define CG             0x341c  /* 32bit */
 
 /* Function Disable 1 RCBA 0x3418 */
-#define PCH_DISABLE_ALWAYS     ((1 << 0)|(1 << 26)|(1 << 27))
-#define PCH_DISABLE_P2P                (1 << 1)
+#define PCH_DISABLE_ALWAYS     (1 << 0)
+#define PCH_DISABLE_ADSPD      (1 << 1)
 #define PCH_DISABLE_SATA1      (1 << 2)
 #define PCH_DISABLE_SMBUS      (1 << 3)
 #define PCH_DISABLE_HD_AUDIO   (1 << 4)
@@ -441,6 +447,7 @@ unsigned get_gpios(const int *gpio_num_array);
 #define PCH_DISABLE_PCIE(x)    (1 << (16 + x))
 #define PCH_DISABLE_THERMAL    (1 << 24)
 #define PCH_DISABLE_SATA2      (1 << 25)
+#define PCH_DISABLE_XHCI       (1 << 27)
 
 /* Function Disable 2 RCBA 0x3428 */
 #define PCH_DISABLE_KT         (1 << 4)
diff --git a/src/southbridge/intel/lynxpoint/sata.c 
b/src/southbridge/intel/lynxpoint/sata.c
index 81d4a1d..25eb94f 100644
--- a/src/southbridge/intel/lynxpoint/sata.c
+++ b/src/southbridge/intel/lynxpoint/sata.c
@@ -23,6 +23,7 @@
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
+#include <delay.h>
 #include "pch.h"
 
 typedef struct southbridge_intel_lynxpoint_config config_t;
@@ -123,6 +124,7 @@ static void sata_init(struct device *dev)
                reg16 &= ~0x3f;
                reg16 |= 0x8000 | config->sata_port_map;
                pci_write_config16(dev, 0x92, reg16);
+               udelay(2);
 
                /* Setup register 98h */
                reg32 = pci_read_config16(dev, 0x98);
@@ -138,6 +140,7 @@ static void sata_init(struct device *dev)
 #if CONFIG_INTEL_LYNXPOINT_LP
                reg32 &= ~((1 << 31) | (1 << 30));
                reg32 |= 1 << 23;
+               reg32 |= 1 << 24;    /* Disable listen mode (hotplug) */
 #endif
                pci_write_config32(dev, 0x98, reg32);
 
@@ -159,6 +162,9 @@ static void sata_init(struct device *dev)
                reg32 = read32(abar + 0x00);
                reg32 |= 0x0c006000;  // set PSC+SSC+SALP+SSS
                reg32 &= ~0x00020060; // clear SXS+EMS+PMS
+#if CONFIG_INTEL_LYNXPOINT_LP
+               reg32 |= (1 << 18);   // SAM: SATA AHCI MODE ONLY
+#endif
                write32(abar + 0x00, reg32);
                /* PI (Ports implemented) */
                write32(abar + 0x0c, config->sata_port_map);
@@ -166,12 +172,13 @@ static void sata_init(struct device *dev)
                (void) read32(abar + 0x0c); /* Read back 2 */
                /* CAP2 (HBA Capabilities Extended)*/
                reg32 = read32(abar + 0x24);
+#if CONFIG_INTEL_LYNXPOINT_LP
+               /* Enable DEVSLP */
+               reg32 |= (1 << 5)|(1 << 4)|(1 << 3)|(1 << 2);
+#else
                reg32 &= ~0x00000002;
+#endif
                write32(abar + 0x24, reg32);
-               /* VSP (Vendor Specific Register */
-               reg32 = read32(abar + 0xa0);
-               reg32 &= ~0x00000005;
-               write32(abar + 0xa0, reg32);
        } else {
                printk(BIOS_DEBUG, "SATA: Controller in plain mode.\n");
 
@@ -230,15 +237,33 @@ static void sata_init(struct device *dev)
 
        /* Additional Programming Requirements */
        /* Power Optimizer */
+
+       /* Step 1 */
+#if CONFIG_INTEL_LYNXPOINT_LP
+       sir_write(dev, 0x64, 0x883c9003);
+#else
        sir_write(dev, 0x64, 0x883c9001);
+#endif
 
+       /* Step 2: SIR 68h[15:0] = 880Ah */
        reg32 = sir_read(dev, 0x68);
        reg32 &= 0xffff0000;
        reg32 |= 0x880a;
        sir_write(dev, 0x68, reg32);
 
+       /* Step 3: SIR 60h[3] = 1 */
+       reg32 = sir_read(dev, 0x60);
+       reg32 |= (1 << 3);
+       sir_write(dev, 0x60, reg32);
+
+       /* Step 4: SIR 60h[0] = 1 */
+       reg32 = sir_read(dev, 0x60);
+       reg32 |= (1 << 0);
+       sir_write(dev, 0x60, reg32);
+
+       /* Step 5: SIR 60h[1] = 1 */
        reg32 = sir_read(dev, 0x60);
-       reg32 |= (1 << 0) | (1 << 1) | (1 << 3);
+       reg32 |= (1 << 1);
        sir_write(dev, 0x60, reg32);
 
        /* Clock Gating */
diff --git a/src/southbridge/intel/lynxpoint/spi.c 
b/src/southbridge/intel/lynxpoint/spi.c
index ec7c862..123c6a9 100644
--- a/src/southbridge/intel/lynxpoint/spi.c
+++ b/src/southbridge/intel/lynxpoint/spi.c
@@ -68,18 +68,6 @@ typedef struct spi_slave ich_spi_slave;
 
 static int ichspi_lock = 0;
 
-typedef struct ich7_spi_regs {
-       uint16_t spis;
-       uint16_t spic;
-       uint32_t spia;
-       uint64_t spid[8];
-       uint64_t _pad;
-       uint32_t bbar;
-       uint16_t preop;
-       uint16_t optype;
-       uint8_t opmenu[8];
-} __attribute__((packed)) ich7_spi_regs;
-
 typedef struct ich9_spi_regs {
        uint32_t bfpr;
        uint16_t hsfs;
@@ -302,110 +290,40 @@ struct spi_slave *spi_setup_slave(unsigned int bus, 
unsigned int cs,
        return slave;
 }
 
-/*
- * Check if this device ID matches one of supported Intel PCH devices.
- *
- * Return the ICH version if there is a match, or zero otherwise.
- */
-static inline int get_ich_version(uint16_t device_id)
-{
-       if (device_id >= PCI_DEVICE_ID_INTEL_LYNXPOINT_MOB_DESK_MIN &&
-           device_id <= PCI_DEVICE_ID_INTEL_LYNXPOINT_MOB_DESK_MAX)
-               return 9;
-
-       return 0;
-}
-
 void spi_init(void)
 {
-       int ich_version = 0;
-
        uint8_t *rcrb; /* Root Complex Register Block */
        uint32_t rcba; /* Root Complex Base Address */
        uint8_t bios_cntl;
        device_t dev;
-       uint32_t ids;
-       uint16_t vendor_id, device_id;
+       ich9_spi_regs *ich9_spi;
 
 #ifdef __SMM__
        dev = PCI_DEV(0, 31, 0);
 #else
        dev = dev_find_slot(0, PCI_DEVFN(31, 0));
 #endif
-       pci_read_config_dword(dev, 0, &ids);
-       vendor_id = ids;
-       device_id = (ids >> 16);
-
-       if (vendor_id != PCI_VENDOR_ID_INTEL) {
-               printk(BIOS_DEBUG, "ICH SPI: No ICH found.\n");
-               return;
-       }
-
-       ich_version = get_ich_version(device_id);
-
-       if (!ich_version) {
-               printk(BIOS_DEBUG, "ICH SPI: No known ICH found.\n");
-               return;
-       }
 
        pci_read_config_dword(dev, 0xf0, &rcba);
        /* Bits 31-14 are the base address, 13-1 are reserved, 0 is enable. */
        rcrb = (uint8_t *)(rcba & 0xffffc000);
-       switch (ich_version) {
-       case 7:
-               {
-                       const uint16_t ich7_spibar_offset = 0x3020;
-                       ich7_spi_regs *ich7_spi =
-                               (ich7_spi_regs *)(rcrb + ich7_spibar_offset);
-
-                       ichspi_lock = readw_(&ich7_spi->spis) & SPIS_LOCK;
-                       cntlr.opmenu = ich7_spi->opmenu;
-                       cntlr.menubytes = sizeof(ich7_spi->opmenu);
-                       cntlr.optype = &ich7_spi->optype;
-                       cntlr.addr = &ich7_spi->spia;
-                       cntlr.data = (uint8_t *)ich7_spi->spid;
-                       cntlr.databytes = sizeof(ich7_spi->spid);
-                       cntlr.status = (uint8_t *)&ich7_spi->spis;
-                       cntlr.control = &ich7_spi->spic;
-                       cntlr.bbar = &ich7_spi->bbar;
-                       cntlr.preop = &ich7_spi->preop;
-                       break;
-               }
-       case 9:
-               {
-                       const uint16_t ich9_spibar_offset = 0x3800;
-                       ich9_spi_regs *ich9_spi =
-                               (ich9_spi_regs *)(rcrb + ich9_spibar_offset);
-                       ichspi_lock = readw_(&ich9_spi->hsfs) & HSFS_FLOCKDN;
-                       cntlr.opmenu = ich9_spi->opmenu;
-                       cntlr.menubytes = sizeof(ich9_spi->opmenu);
-                       cntlr.optype = &ich9_spi->optype;
-                       cntlr.addr = &ich9_spi->faddr;
-                       cntlr.data = (uint8_t *)ich9_spi->fdata;
-                       cntlr.databytes = sizeof(ich9_spi->fdata);
-                       cntlr.status = &ich9_spi->ssfs;
-                       cntlr.control = (uint16_t *)ich9_spi->ssfc;
-                       cntlr.bbar = &ich9_spi->bbar;
-                       cntlr.preop = &ich9_spi->preop;
-                       break;
-               }
-       default:
-               printk(BIOS_DEBUG, "ICH SPI: Unrecognized ICH version %d.\n", 
ich_version);
-       }
-
+       ich9_spi = (ich9_spi_regs *)(rcrb + 0x3800);
+       ichspi_lock = readw_(&ich9_spi->hsfs) & HSFS_FLOCKDN;
+       cntlr.opmenu = ich9_spi->opmenu;
+       cntlr.menubytes = sizeof(ich9_spi->opmenu);
+       cntlr.optype = &ich9_spi->optype;
+       cntlr.addr = &ich9_spi->faddr;
+       cntlr.data = (uint8_t *)ich9_spi->fdata;
+       cntlr.databytes = sizeof(ich9_spi->fdata);
+       cntlr.status = &ich9_spi->ssfs;
+       cntlr.control = (uint16_t *)ich9_spi->ssfc;
+       cntlr.bbar = &ich9_spi->bbar;
+       cntlr.preop = &ich9_spi->preop;
        ich_set_bbar(0);
 
        /* Disable the BIOS write protect so write commands are allowed. */
        pci_read_config_byte(dev, 0xdc, &bios_cntl);
-       switch (ich_version) {
-       case 9:
-               /* Deassert SMM BIOS Write Protect Disable. */
-               bios_cntl &= ~(1 << 5);
-               break;
-
-       default:
-               break;
-       }
+       bios_cntl &= ~(1 << 5);
        pci_write_config_byte(dev, 0xdc, bios_cntl | 0x1);
 }
 

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