diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/northbridge/intel/i945/northbridge.c | 75 |
1 files changed, 23 insertions, 52 deletions
diff --git a/src/northbridge/intel/i945/northbridge.c b/src/northbridge/intel/i945/northbridge.c index 00276562d8..47c14f7806 100644 --- a/src/northbridge/intel/i945/northbridge.c +++ b/src/northbridge/intel/i945/northbridge.c @@ -11,16 +11,13 @@ #include <acpi/acpi.h> #include <cpu/intel/smm_reloc.h> #include <cpu/intel/speedstep.h> +#include <cpu/x86/smm.h> #include "i945.h" static void mch_domain_read_resources(struct device *dev) { - uint32_t pci_tolm, tseg_sizek, cbmem_topk, delta_cbmem; - uint8_t tolud; - uint16_t reg16; - unsigned long long tomk, tomk_stolen; - uint64_t uma_memory_base = 0, uma_memory_size = 0; - uint64_t tseg_memory_base = 0, tseg_memory_size = 0; + uint32_t pci_tolm; + uintptr_t tolud; struct device *const d0f0 = pcidev_on_root(0, 0); int idx = 3; @@ -32,59 +29,33 @@ static void mch_domain_read_resources(struct device *dev) pci_tolm = find_pci_tolm(dev->link_list); printk(BIOS_DEBUG, "pci_tolm: 0x%x\n", pci_tolm); - tolud = pci_read_config8(d0f0, TOLUD); - printk(BIOS_SPEW, "Top of Low Used DRAM: 0x%08x\n", tolud << 24); + tolud = pci_read_config8(d0f0, TOLUD) << 24; + printk(BIOS_SPEW, "Top of Low Used DRAM: 0x%08lx\n", tolud); - tomk = tolud << 14; - tomk_stolen = tomk; - - /* Note: subtract IGD device and TSEG */ - reg16 = pci_read_config16(d0f0, GGC); - if (!(reg16 & 2)) { - printk(BIOS_DEBUG, "IGD decoded, subtracting "); - int uma_size = decode_igd_memory_size((reg16 >> 4) & 7); - - printk(BIOS_DEBUG, "%dM UMA\n", uma_size / KiB); - tomk_stolen -= uma_size; - - /* For reserving UMA memory in the memory map */ - uma_memory_base = tomk_stolen * 1024ULL; - uma_memory_size = uma_size * 1024ULL; - - printk(BIOS_SPEW, "Base of stolen memory: 0x%08x\n", - (unsigned int)uma_memory_base); - } + /* Report the memory regions */ + ram_range(dev, idx++, 0, 0xa0000); + ram_from_to(dev, idx++, 1 * MiB, (uintptr_t)cbmem_top()); - tseg_sizek = decode_tseg_size(pci_read_config8(d0f0, ESMRAMC)) / KiB; - printk(BIOS_DEBUG, "TSEG decoded, subtracting %dM\n", tseg_sizek / KiB); - tomk_stolen -= tseg_sizek; - tseg_memory_base = tomk_stolen * 1024ULL; - tseg_memory_size = tseg_sizek * 1024ULL; + /* TSEG */ + uintptr_t tseg_base; + size_t tseg_size; + smm_region(&tseg_base, &tseg_size); + mmio_range(dev, idx++, tseg_base, tseg_size); /* cbmem_top can be shifted downwards due to alignment. - Mark the region between cbmem_top and tomk as unusable */ - cbmem_topk = ((uintptr_t)cbmem_top() / KiB); - delta_cbmem = tomk_stolen - cbmem_topk; - tomk_stolen -= delta_cbmem; - - printk(BIOS_DEBUG, "Unused RAM between cbmem_top and TOM: 0x%xK\n", delta_cbmem); - - /* The following needs to be 2 lines, otherwise the second - * number is always 0 - */ - printk(BIOS_INFO, "Available memory: %dK", (uint32_t)tomk_stolen); - printk(BIOS_INFO, " (%dM)\n", (uint32_t)(tomk_stolen / KiB)); + Mark the region between cbmem_top and tseg_base as unusable */ + if ((uintptr_t)cbmem_top() < tseg_base) { + printk(BIOS_DEBUG, "Unused RAM between cbmem_top and TOM: 0x%lx\n", + tseg_base - (uintptr_t)cbmem_top()); + mmio_from_to(dev, idx++, (uintptr_t)cbmem_top(), tseg_base); + } + if (tseg_base + tseg_size < tolud) + mmio_from_to(dev, idx++, tseg_base + tseg_size, tolud); - /* Report the memory regions */ - ram_resource_kb(dev, idx++, 0, 0xa0000 / KiB); - ram_resource_kb(dev, idx++, 1 * MiB / KiB, (tomk - 1 * MiB / KiB)); - uma_resource_kb(dev, idx++, uma_memory_base / KiB, uma_memory_size / KiB); - mmio_resource_kb(dev, idx++, tseg_memory_base / KiB, tseg_memory_size / KiB); - uma_resource_kb(dev, idx++, cbmem_topk, delta_cbmem); /* legacy VGA memory */ - mmio_resource_kb(dev, idx++, 0xa0000 / KiB, (0xc0000 - 0xa0000) / KiB); + mmio_from_to(dev, idx++, 0xa0000, 0xc0000); /* RAM to be used for option roms and BIOS */ - reserved_ram_resource_kb(dev, idx++, 0xc0000 / KiB, (1 * MiB - 0xc0000) / KiB); + reserved_ram_from_to(dev, idx++, 0xc0000, 1 * MiB); } static void mch_domain_set_resources(struct device *dev) |