diff options
Diffstat (limited to 'resources/libreboot/patch/kgpe-d16/0067-southbridge-amd-sb700-Recover-if-AHCI-disk-detection.patch')
| -rw-r--r-- | resources/libreboot/patch/kgpe-d16/0067-southbridge-amd-sb700-Recover-if-AHCI-disk-detection.patch | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/resources/libreboot/patch/kgpe-d16/0067-southbridge-amd-sb700-Recover-if-AHCI-disk-detection.patch b/resources/libreboot/patch/kgpe-d16/0067-southbridge-amd-sb700-Recover-if-AHCI-disk-detection.patch new file mode 100644 index 00000000..407952e3 --- /dev/null +++ b/resources/libreboot/patch/kgpe-d16/0067-southbridge-amd-sb700-Recover-if-AHCI-disk-detection.patch @@ -0,0 +1,163 @@ +From e80d2ec15e83fe1e6bb1ee4c8b3d4dad196e023f Mon Sep 17 00:00:00 2001 +From: Timothy Pearson <tpearson@raptorengineeringinc.com> +Date: Mon, 22 Jun 2015 02:21:29 -0500 +Subject: [PATCH 067/143] southbridge/amd/sb700: Recover if AHCI disk + detection fails + +Change-Id: I29051af5eca5d31b6aecc261e9a48028380eccb3 +Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> +--- + src/southbridge/amd/sb700/sata.c | 83 ++++++++++++++++++++++++++++++++++---- + 1 file changed, 75 insertions(+), 8 deletions(-) + +diff --git a/src/southbridge/amd/sb700/sata.c b/src/southbridge/amd/sb700/sata.c +index d51baa1..ce242c1 100644 +--- a/src/southbridge/amd/sb700/sata.c ++++ b/src/southbridge/amd/sb700/sata.c +@@ -31,12 +31,15 @@ + static int sata_drive_detect(int portnum, uint16_t iobar) + { + u8 byte, byte2; ++ u8 byte_prev, byte2_prev; + int i = 0; ++ byte_prev = byte2_prev = 0; + outb(0xa0 + 0x10 * (portnum % 2), iobar + 0x6); + while (byte = inb(iobar + 0x6), byte2 = inb(iobar + 0x7), + (byte != (0xa0 + 0x10 * (portnum % 2))) || + ((byte2 & 0x88) != 0)) { +- printk(BIOS_SPEW, "0x6=%x, 0x7=%x\n", byte, byte2); ++ if ((byte != byte_prev) || (byte2 != byte2_prev)) ++ printk(BIOS_SPEW, "0x6=%x, 0x7=%x\n", byte, byte2); + if (byte != (0xa0 + 0x10 * (portnum % 2))) { + /* This will happen at the first iteration of this loop + * if the first SATA port is unpopulated and the +@@ -45,11 +48,22 @@ static int sata_drive_detect(int portnum, uint16_t iobar) + printk(BIOS_DEBUG, "drive no longer selected after %i ms, " + "retrying init\n", i * 10); + return 1; +- } else +- printk(BIOS_SPEW, "drive detection not yet completed, " +- "waiting...\n"); ++ } else { ++ if (i == 0) ++ printk(BIOS_SPEW, "drive detection not yet completed, " ++ "waiting...\n"); ++ } + mdelay(10); + i++; ++ byte_prev = byte; ++ byte2_prev = byte2; ++ ++ /* Detect stuck SATA controller and attempt reset */ ++ if (i > 1024) { ++ printk(BIOS_DEBUG, "drive detection not done after %i ms, " ++ "resetting HBA and retrying init\n", i * 10); ++ return 2; ++ } + } + printk(BIOS_SPEW, "drive detection done after %i ms\n", i * 10); + return 0; +@@ -105,12 +119,13 @@ static void sata_init(struct device *dev) + uint16_t sata_bar0, sata_bar1, sata_bar2, sata_bar3, sata_bar4; + uint16_t ide_bar0, ide_bar1, ide_bar2, ide_bar3; + uint16_t current_bar; +- int i, j; ++ int i, j, ret; + uint8_t nvram; + uint8_t sata_ahci_mode; + uint8_t sata_alpm_enable; + uint8_t port_count; + uint8_t max_port_count; ++ uint8_t hba_reset_count; + + sata_ahci_mode = 0; + if (get_option(&nvram, "sata_ahci_mode") == CB_SUCCESS) +@@ -124,14 +139,23 @@ static void sata_init(struct device *dev) + /* SATA SMBus Disable */ + sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); + ++ hba_reset_count = 0; ++ ++retry_init: + byte = pci_read_config8(sm_dev, 0xad); + /* Disable SATA SMBUS */ +- byte |= (1 << 0); +- /* Enable SATA and power saving */ + byte |= (1 << 1); ++ /* Enable SATA and power saving */ ++ byte |= (1 << 0); + byte |= (1 << 5); + pci_write_config8(sm_dev, 0xad, byte); + ++ /* Take the PHY logic out of reset */ ++ word = pci_read_config16(dev, 0x84); ++ word |= 0x1 << 2; ++ word &= ~0x1f8; ++ pci_write_config16(dev, 0x84, word); ++ + /* get rev_id */ + rev_id = pci_read_config8(sm_dev, 0x08) - 0x28; + +@@ -324,6 +348,26 @@ static void sata_init(struct device *dev) + if (port_count > max_port_count) + port_count = max_port_count; + ++ /* Send COMRESET to all ports */ ++ for (i = 0; i < port_count; i++) { ++ /* Read in Port-N Serial ATA Control Register */ ++ byte = read8(sata_bar5 + 0x12C + 0x80 * i); ++ ++ /* Set Reset Bit */ ++ byte |= 0x1; ++ write8((sata_bar5 + 0x12C + 0x80 * i), byte); ++ ++ /* Wait 1ms */ ++ mdelay(1); ++ ++ /* Clear Reset Bit */ ++ byte &= ~0x01; ++ write8((sata_bar5 + 0x12C + 0x80 * i), byte); ++ ++ /* Wait 1ms */ ++ mdelay(1); ++ } ++ + /* RPR7.7 SATA drive detection. */ + /* Use BAR5+0x128,BAR0 for Primary Slave */ + /* Use BAR5+0x1A8,BAR0 for Primary Slave */ +@@ -369,8 +413,31 @@ static void sata_init(struct device *dev) + current_bar = ((i / 2) == 0) ? sata_bar0 : sata_bar2; + else + current_bar = ide_bar0; +- if (!sata_drive_detect(i, current_bar)) ++ ret = sata_drive_detect(i, current_bar); ++ if (ret == 0) { + break; ++ } else if (ret == 2) { ++ /* Reset PHY logic */ ++ word = pci_read_config16(dev, 0x84); ++ word &= ~(0x1 << 2); ++ word |= 0x1f8; ++ pci_write_config16(dev, 0x84, word); ++ ++ /* Disable SATA controller */ ++ byte = pci_read_config8(sm_dev, 0xad); ++ byte &= ~(0x1); ++ pci_write_config8(sm_dev, 0xad, byte); ++ ++ mdelay(100); ++ ++ /* Retry initialization */ ++ hba_reset_count++; ++ if (hba_reset_count < 16) ++ goto retry_init; ++ else ++ printk(BIOS_WARNING, "HBA reset count exceeded, " ++ "continuing but AHCI drives may not function\n"); ++ } + } + if (sata_ahci_mode) + printk(BIOS_DEBUG, "AHCI device %d is %sready after %i tries\n", +-- +1.7.9.5 + |