Ranges unavailable for PCI BARs should be marked as reserved in the E820 memory map, in case the OS wants to change the BARs. This patch adds the IORESOURCE_RESERVE flag to the APIC and MMCONF resource flags to do this. I also added a new resource for the mapped bios rom area just below 4GB. I'm not sure if the choice for the index parameter of new_resource() is correct though. Note that the bios rom decode is enabled in src/southbridge/via/vt8237r/vt8237r_early_smbus.c for the whole 4MB area (even though the comment says 1MB).
Signed-off-by: Tobias Diedrich ranma+coreboot@tdiedrich.de
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Index: coreboot-svn-m2v-splitpatches/src/southbridge/via/k8t890/k8t890_traf_ctrl.c =================================================================== --- coreboot-svn-m2v-splitpatches.orig/src/southbridge/via/k8t890/k8t890_traf_ctrl.c 2010-11-03 21:38:32.000000000 +0100 +++ coreboot-svn-m2v-splitpatches/src/southbridge/via/k8t890/k8t890_traf_ctrl.c 2010-11-03 21:45:21.000000000 +0100 @@ -58,7 +58,7 @@ res->limit = res->base + res->size - 1; res->align = 8; res->gran = 8; - res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | + res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_RESERVE | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
/* Add an MMCONFIG resource. */ @@ -67,7 +67,7 @@ res->align = log2(res->size); res->gran = log2(res->size); res->limit = 0xffffffff; /* 4G */ - res->flags = IORESOURCE_MEM; + res->flags = IORESOURCE_MEM | IORESOURCE_RESERVE; }
static void traf_ctrl_enable_generic(struct device *dev) Index: coreboot-svn-m2v-splitpatches/src/southbridge/via/vt8237r/vt8237r_lpc.c =================================================================== --- coreboot-svn-m2v-splitpatches.orig/src/southbridge/via/vt8237r/vt8237r_lpc.c 2010-11-03 21:50:45.000000000 +0100 +++ coreboot-svn-m2v-splitpatches/src/southbridge/via/vt8237r/vt8237r_lpc.c 2010-11-03 21:58:52.000000000 +0100 @@ -566,7 +566,15 @@ res->limit = 0xffffffffUL; res->align = 8; res->gran = 8; - res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | + res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_RESERVE | + IORESOURCE_STORED | IORESOURCE_ASSIGNED; + + /* Fixed flashrom resource */ + res = new_resource(dev, 4); + res->base = 0xffc00000UL; + res->size = 0x00400000UL; /* 4MB */ + res->limit = 0xffffffffUL; + res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_RESERVE | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
res = new_resource(dev, 1);
-
Tobias Diedrich