Fix K8 boards high tables on UMA systems (KT690 for example) Thanks to Carl-Daniel for pointing this out with some example code. Signed-off-by: Stefan Reinauer Index: src/northbridge/amd/amdk8/northbridge.c =================================================================== --- src/northbridge/amd/amdk8/northbridge.c (revision 4831) +++ src/northbridge/amd/amdk8/northbridge.c (working copy) @@ -837,7 +837,10 @@ #if CONFIG_WRITE_HIGH_TABLES==1 #define HIGH_TABLES_SIZE 64 // maximum size of high tables in KB extern uint64_t high_tables_base, high_tables_size; +#if CONFIG_GFXUMA == 1 +extern uint64_t uma_memory_base, uma_memory_size; #endif +#endif static void amdk8_domain_set_resources(device_t dev) { @@ -1001,7 +1004,13 @@ } +#if CONFIG_GFXUMA == 1 + printk_debug("node %d : uma_memory_base/1024=0x%08x, mmio_basek=0x%08x, basek=0x%08x, limitk=0x%08x\n", i, uma_memory_base >> 10, mmio_basek, basek, limitk); + if ((uma_memory_base >> 10) < mmio_basek) + printk_alert("node %d: UMA memory starts below mmio_basek\n", i); +#else // printk_debug("node %d : mmio_basek=%08x, basek=%08x, limitk=%08x\n", i, mmio_basek, basek, limitk); //yhlu +#endif /* See if I need to split the region to accomodate pci memory space */ if ( (basek < 4*1024*1024 ) && (limitk > mmio_basek) ) { @@ -1015,7 +1024,11 @@ #if CONFIG_WRITE_HIGH_TABLES==1 if (i==0 && high_tables_base==0) { /* Leave some space for ACPI, PIRQ and MP tables */ +#if CONFIG_GFXUMA == 1 + high_tables_base = ((uma_memory_base >> 10) - HIGH_TABLES_SIZE) * 1024; +#else high_tables_base = (mmio_basek - HIGH_TABLES_SIZE) * 1024; +#endif high_tables_size = HIGH_TABLES_SIZE * 1024; printk_debug(" split: %dK table at =%08llx\n", HIGH_TABLES_SIZE, high_tables_base); @@ -1051,7 +1064,11 @@ i, mmio_basek, basek, limitk); if (i==0 && high_tables_base==0) { /* Leave some space for ACPI, PIRQ and MP tables */ +#if CONFIG_GFXUMA == 1 + high_tables_base = ((uma_memory_base >> 10) - HIGH_TABLES_SIZE) * 1024; +#else high_tables_base = (limitk - HIGH_TABLES_SIZE) * 1024; +#endif high_tables_size = HIGH_TABLES_SIZE * 1024; } #endif