Author: stefanct Date: Thu Sep 12 10:38:23 2013 New Revision: 1739 URL: http://flashrom.org/trac/flashrom/changeset/1739
Log: Fix ROM decoding on VIA VT82C596 and VT82C686A/B.
These support an additional bit which we did not turn on yet. Without this patch they decode up to 512 kB, with this up to 1 MB.
Disentangle the enables of unrelated but mostly compatible chipsets too, add some more debug output and set the max_rom_decode limits. Also, make warnings really only warnings.
Signed-off-by: Stefan Tauner stefan.tauner@student.tuwien.ac.at Acked-by: Stefan Tauner stefan.tauner@student.tuwien.ac.at
Modified: trunk/chipset_enable.c
Modified: trunk/chipset_enable.c ============================================================================== --- trunk/chipset_enable.c Thu Sep 12 10:29:06 2013 (r1738) +++ trunk/chipset_enable.c Thu Sep 12 10:38:23 2013 (r1739) @@ -884,22 +884,29 @@ return 0; }
-/* Works for AMD-8111, VIA VT82C586A/B, VIA VT82C686A/B. */ -static int enable_flash_amd8111(struct pci_dev *dev, const char *name) +/* Works for AMD-768, AMD-8111, VIA VT82C586A/B, VIA VT82C596, VIA VT82C686A/B. + * + * ROM decode control register matrix + * AMD-768 AMD-8111 VT82C586A/B VT82C596 VT82C686A/B + * 7 FFC0_0000h–FFFF_FFFFh <- FFFE0000h-FFFEFFFFh <- <- + * 6 FFB0_0000h–FFBF_FFFFh <- FFF80000h-FFFDFFFFh <- <- + * 5 00E8... <- <- FFF00000h-FFF7FFFFh <- + */ +static int enable_flash_amd_via(struct pci_dev *dev, const char *name, uint8_t decode_val) { #define AMD_MAPREG 0x43 #define AMD_ENREG 0x40 uint8_t old, new;
- /* Enable decoding at 0xffb00000 to 0xffffffff. */ old = pci_read_byte(dev, AMD_MAPREG); - new = old | 0xC0; + new = old | decode_val; if (new != old) { rpci_write_byte(dev, AMD_MAPREG, new); if (pci_read_byte(dev, AMD_MAPREG) != new) { - msg_pinfo("Setting register 0x%x to 0x%02x on %s failed (WARNING ONLY).\n", + msg_pwarn("Setting register 0x%x to 0x%02x on %s failed (WARNING ONLY).\n", AMD_MAPREG, new, name); - } + } else + msg_pdbg("Changed ROM decode range to 0x%02x successfully.\n", new); }
/* Enable 'ROM write' bit. */ @@ -910,14 +917,37 @@ rpci_write_byte(dev, AMD_ENREG, new);
if (pci_read_byte(dev, AMD_ENREG) != new) { - msg_pinfo("Setting register 0x%x to 0x%02x on %s failed (WARNING ONLY).\n", + msg_pwarn("Setting register 0x%x to 0x%02x on %s failed (WARNING ONLY).\n", AMD_ENREG, new, name); - return -1; + return ERROR_NONFATAL; } + msg_pdbg2("Set ROM enable bit successfully.\n");
return 0; }
+static int enable_flash_amd_768_8111(struct pci_dev *dev, const char *name) +{ + /* Enable decoding of 0xFFB00000 to 0xFFFFFFFF (5 MB). */ + max_rom_decode.lpc = 5 * 1024 * 1024; + return enable_flash_amd_via(dev, name, 0xC0); +} + +static int enable_flash_vt82c586(struct pci_dev *dev, const char *name) +{ + /* Enable decoding of 0xFFF80000 to 0xFFFFFFFF. (512 kB) */ + max_rom_decode.parallel = 512 * 1024; + return enable_flash_amd_via(dev, name, 0xC0); +} + +/* Works for VT82C686A/B too. */ +static int enable_flash_vt82c596(struct pci_dev *dev, const char *name) +{ + /* Enable decoding of 0xFFF80000 to 0xFFFFFFFF. (1 MB) */ + max_rom_decode.parallel = 1024 * 1024; + return enable_flash_amd_via(dev, name, 0xE0); +} + static int enable_flash_sb600(struct pci_dev *dev, const char *name) { uint32_t prot; @@ -1304,8 +1334,8 @@ {0x1022, 0x2080, OK, "AMD", "CS5536", enable_flash_cs5536}, {0x1022, 0x2090, OK, "AMD", "CS5536", enable_flash_cs5536}, {0x1022, 0x3000, OK, "AMD", "Elan SC520", get_flashbase_sc520}, - {0x1022, 0x7440, OK, "AMD", "AMD-768", enable_flash_amd8111}, - {0x1022, 0x7468, OK, "AMD", "AMD8111", enable_flash_amd8111}, + {0x1022, 0x7440, OK, "AMD", "AMD-768", enable_flash_amd_768_8111}, + {0x1022, 0x7468, OK, "AMD", "AMD-8111", enable_flash_amd_768_8111}, {0x1022, 0x780e, OK, "AMD", "FCH", enable_flash_sb600}, {0x1039, 0x0406, NT, "SiS", "501/5101/5501", enable_flash_sis501}, {0x1039, 0x0496, NT, "SiS", "85C496+497", enable_flash_sis85c496}, @@ -1390,9 +1420,9 @@ {0x1106, 0x0691, OK, "VIA", "VT82C69x", via_no_byte_merge}, {0x1106, 0x8601, NT, "VIA", "VT8601T", via_no_byte_merge}, /* VIA southbridges */ - {0x1106, 0x0586, OK, "VIA", "VT82C586A/B", enable_flash_amd8111}, - {0x1106, 0x0596, OK, "VIA", "VT82C596", enable_flash_amd8111}, - {0x1106, 0x0686, OK, "VIA", "VT82C686A/B", enable_flash_amd8111}, + {0x1106, 0x0586, OK, "VIA", "VT82C586A/B", enable_flash_vt82c586}, + {0x1106, 0x0596, OK, "VIA", "VT82C596", enable_flash_vt82c596}, + {0x1106, 0x0686, OK, "VIA", "VT82C686A/B", enable_flash_vt82c596}, {0x1106, 0x3074, OK, "VIA", "VT8233", enable_flash_vt823x}, {0x1106, 0x3147, OK, "VIA", "VT8233A", enable_flash_vt823x}, {0x1106, 0x3177, OK, "VIA", "VT8235", enable_flash_vt823x},