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| author | Stefan Reinauer <stepan@coresystems.de> | 2009-02-27 23:09:55 +0000 |
|---|---|---|
| committer | Stefan Reinauer <stepan@openbios.org> | 2009-02-27 23:09:55 +0000 |
| commit | 3c7f46b42215502ecaee54c85f6d08dce9e21279 (patch) | |
| tree | 2f526a49a0182348e5d9a24b0d4d57c1f2f97619 /src/northbridge | |
| parent | 678d6140a5f75bde7b5a6b7ef296ebb7a3dda166 (diff) | |
| download | coreboot-3c7f46b42215502ecaee54c85f6d08dce9e21279.tar.xz | |
Generic approach of putting BIOS tables at the end of memory
(in addition to their low locations)
This adds the kontron 986LCD-M and the i945 as a sample.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Myles Watson <mylesgw@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3960 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/northbridge')
| -rw-r--r-- | src/northbridge/intel/i945/northbridge.c | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/src/northbridge/intel/i945/northbridge.c b/src/northbridge/intel/i945/northbridge.c index 6aa9f2d545..9cb5cefe62 100644 --- a/src/northbridge/intel/i945/northbridge.c +++ b/src/northbridge/intel/i945/northbridge.c @@ -93,12 +93,18 @@ static uint32_t find_pci_tolm(struct bus *bus) return tolm; } +#if HAVE_HIGH_TABLES==1 +#define HIGH_TABLES_SIZE 64 // maximum size of high tables in KB +extern uint64_t high_tables_base, high_tables_size; +#endif +uint64_t uma_memory_base=0, uma_memory_size=0; + static void pci_domain_set_resources(device_t dev) { uint32_t pci_tolm; uint8_t tolud, reg8; uint16_t reg16; - unsigned long long tomk, tolmk; + unsigned long long tomk; pci_tolm = find_pci_tolm(&dev->link[0]); @@ -120,13 +126,13 @@ static void pci_domain_set_resources(device_t dev) switch (reg8) { case 0: tseg_size = 1024; - break; + break; /* TSEG = 1M */ case 1: tseg_size = 2048; - break; + break; /* TSEG = 2M */ case 2: tseg_size = 8192; - break; + break; /* TSEG = 8M */ } printk_debug("%dM\n", tseg_size >> 10); @@ -150,24 +156,32 @@ static void pci_domain_set_resources(device_t dev) printk_debug("%dM UMA\n", uma_size >> 10); tomk -= uma_size; + + /* For reserving UMA memory in the memory map */ + uma_memory_base = tomk * 1024ULL; + uma_memory_size = uma_size * 1024ULL; } /* The following needs to be 2 lines, otherwise the second * number is always 0 */ - printk_info("Available memory: %dK", tomk); - printk_info(" (%dM)\n", (tomk >> 10)); - - tolmk = tomk; + printk_info("Available memory: %dK", (uint32_t)tomk); + printk_info(" (%dM)\n", (uint32_t)(tomk >> 10)); /* Report the memory regions */ ram_resource(dev, 3, 0, 640); - ram_resource(dev, 4, 768, (tolmk - 768)); + ram_resource(dev, 4, 768, (tomk - 768)); if (tomk > 4 * 1024 * 1024) { ram_resource(dev, 5, 4096 * 1024, tomk - 4 * 1024 * 1024); } assign_resources(&dev->link[0]); + +#if HAVE_HIGH_TABLES==1 + /* Leave some space for ACPI, PIRQ and MP tables */ + high_tables_base = (tomk - HIGH_TABLES_SIZE) * 1024; + high_tables_size = HIGH_TABLES_SIZE * 1024; +#endif } static unsigned int pci_domain_scan_bus(device_t dev, unsigned int max) |