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Detect AMD Yangtze (found in Kabini and Tamesh)

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The PCI ID of the LPC bridge doesn't change between Hudson-2/3/4 and
Yangtze (Kabini/Temash) but the SPI interface does. Bail out in case we
detect Yangtze and add infrastructure to distinguish other families too for
further refactorings.

Also, add ASRock IMB-A180 to the laptop whitelist and refine the IMC
warning a bit.

Tested on ASRock IMB-A180 with and w/o USE_YANGTZE_HEURISTICS, and
by Chris Goodrich from Sage on
 - SB600
 - SB700
 - SB800
 - Hudson 3 (A70M)
 - Kabini

Corresponding to flashrom svn r1706.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
This commit is contained in:
Stefan Tauner
2013-08-08 12:00:19 +00:00
parent d2a7e873f3
commit 463dd6953e
3 changed files with 67 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

69
sb600spi.c
View File

@ -44,6 +44,58 @@
*/
static uint8_t *sb600_spibar = NULL;
enum amd_chipset {
CHIPSET_AMD_UNKNOWN,
CHIPSET_SB6XX,
CHIPSET_SB7XX, /* SP5100 too */
CHIPSET_SB89XX, /* Hudson-1 too */
CHIPSET_HUDSON234,
CHIPSET_YANGTZE,
};
static enum amd_chipset amd_gen = CHIPSET_AMD_UNKNOWN;
static void determine_generation(struct pci_dev *dev)
{
amd_gen = CHIPSET_AMD_UNKNOWN;
if (dev->device_id == 0x780e) {
/* The PCI ID of the LPC bridge doesn't change between Hudson-2/3/4 and Yangtze (Kabini/Temash)
* although they use different SPI interfaces. */
#ifdef USE_YANGTZE_HEURISTICS
/* This heuristic accesses the SPI interface MMIO BAR at locations beyond those supported by
* Hudson in the hope of getting 0xff readback on older chipsets and non-0xff readback on
* Yangtze (and newer, compatible chipsets). */
int i;
msg_pdbg("Checking for AMD Yangtze (Kabini/Temash) or later... ");
for (i = 0x20; i <= 0x4f; i++) {
if (mmio_readb(sb600_spibar + i) != 0xff) {
amd_gen = CHIPSET_YANGTZE;
msg_pdbg("found.\n");
return;
}
}
msg_pdbg("not found. Assuming Hudson.\n");
amd_gen = CHIPSET_HUDSON234;
#else
struct pci_dev *smbus_dev = pci_dev_find(0x1022, 0x780B);
if (smbus_dev == NULL) {
msg_pdbg("No SMBus device with ID 1022:780B found.\n");
return;
}
uint8_t rev = pci_read_byte(smbus_dev, PCI_REVISION_ID);
if (rev >= 0x11 && rev <= 0x15) {
amd_gen = CHIPSET_HUDSON234;
msg_pdbg("Hudson-2/3/4 detected.\n");
} else if (rev >= 0x39 && rev <= 0x3A) {
amd_gen = CHIPSET_YANGTZE;
msg_pdbg("Yangtze detected.\n");
} else {
msg_pwarn("FCH device found but SMBus revision 0x%02x does not match known values.\n"
"Please report this to flashrom@flashrom.org and include this log and\n"
"the output of lspci -nnvx, thanks!.\n", rev);
}
#endif
}
}
static void reset_internal_fifo_pointer(void)
{
@ -212,9 +264,9 @@ static int sb600_handle_imc(struct pci_dev *dev, bool amd_imc_force)
if (!amd_imc_force)
programmer_may_write = 0;
msg_pinfo("Writes have been disabled for safety reasons because the IMC is active\n"
"and it could interfere with accessing flash memory. Flashrom will try\n"
"to disable it temporarily but even then this might not be safe:\n"
msg_pinfo("Writes have been disabled for safety reasons because the presence of the IMC\n"
"was detected and it could interfere with accessing flash memory. Flashrom will\n"
"try to disable it temporarily but even then this might not be safe:\n"
"when it is reenabled and after a reboot it expects to find working code\n"
"in the flash and it is unpredictable what happens if there is none.\n"
"\n"
@ -281,6 +333,14 @@ int sb600_probe_spi(struct pci_dev *dev)
*/
sb600_spibar += tmp & 0xfff;
determine_generation(dev);
if (amd_gen == CHIPSET_YANGTZE) {
msg_perr("SPI on Kabini/Temash and newer chipsets are not yet supported.\n"
"Please try a newer version of flashrom.\n");
return ERROR_NONFATAL;
}
tmp = pci_read_long(dev, 0xa0);
msg_pdbg("AltSpiCSEnable=%i, SpiRomEnable=%i, "
"AbortEnable=%i\n", tmp & 0x1, (tmp & 0x2) >> 1,
@ -312,9 +372,8 @@ int sb600_probe_spi(struct pci_dev *dev)
/* Look for the SMBus device. */
smbus_dev = pci_dev_find(0x1002, 0x4385);
if (!smbus_dev) {
smbus_dev = pci_dev_find(0x1022, 0x780b); /* AMD Hudson */
smbus_dev = pci_dev_find(0x1022, 0x780b); /* AMD FCH */
if (!smbus_dev) {
msg_perr("ERROR: SMBus device not found. Not enabling SPI.\n");
return ERROR_NONFATAL;