From 9c07c8f53db10e1c93f41e37a9ba8a246fa0336e Mon Sep 17 00:00:00 2001 From: Duncan Laurie Date: Fri, 22 Mar 2013 11:08:39 -0700 Subject: lynxpoint: Move ACPI NVS into separate CBMEM table The ACPI NVS region was setup in place and there was a CBMEM table that pointed to it. In order to be able to use NVS earlier the CBMEM region is allocated for NVS itself during the LPC device init and the ACPI tables point to it in CBMEM. The current cbmem region is renamed to ACPI_GNVS_PTR to indicate that it is really a pointer to the GNVS and does not actually contain the GNVS. Change-Id: I31ace432411c7f825d86ca75c63dd79cd658e891 Signed-off-by: Duncan Laurie Reviewed-on: http://review.coreboot.org/2970 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich --- src/mainboard/intel/baskingridge/acpi_tables.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) (limited to 'src/mainboard/intel/baskingridge') diff --git a/src/mainboard/intel/baskingridge/acpi_tables.c b/src/mainboard/intel/baskingridge/acpi_tables.c index d94251ebda..c4adcd71d9 100644 --- a/src/mainboard/intel/baskingridge/acpi_tables.c +++ b/src/mainboard/intel/baskingridge/acpi_tables.c @@ -70,7 +70,6 @@ static void acpi_update_thermal_table(global_nvs_t *gnvs) static void acpi_create_gnvs(global_nvs_t *gnvs) { - memset((void *)gnvs, 0, sizeof(*gnvs)); gnvs->apic = 1; gnvs->mpen = 1; /* Enable Multi Processing */ gnvs->pcnt = dev_count_cpu(); @@ -165,6 +164,7 @@ unsigned long write_acpi_tables(unsigned long start) #endif acpi_header_t *ssdt; acpi_header_t *dsdt; + global_nvs_t *gnvs; current = start; @@ -240,22 +240,28 @@ unsigned long write_acpi_tables(unsigned long start) ALIGN_CURRENT; acpi_add_table(rsdp, mcfg); - /* Pack GNVS into the ACPI table area */ + /* Update GNVS pointer into CBMEM */ + gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); + if (!gnvs) { + printk(BIOS_DEBUG, "ACPI: Could not find CBMEM GNVS\n"); + gnvs = (global_nvs_t *)current; + } + for (i=0; i < dsdt->length; i++) { if (*(u32*)(((u32)dsdt) + i) == 0xC0DEBABE) { printk(BIOS_DEBUG, "ACPI: Patching up global NVS in " - "DSDT at offset 0x%04x -> 0x%08lx\n", i, current); - *(u32*)(((u32)dsdt) + i) = current; // 0x92 bytes - acpi_save_gnvs(current); + "DSDT at offset 0x%04x -> %p\n", i, gnvs); + *(u32*)(((u32)dsdt) + i) = (unsigned long)gnvs; + acpi_save_gnvs((unsigned long)gnvs); break; } } /* And fill it */ - acpi_create_gnvs((global_nvs_t *)current); + acpi_create_gnvs(gnvs); /* And tell SMI about it */ - smm_setup_structures((void *)current, NULL, NULL); + smm_setup_structures(gnvs, NULL, NULL); current += sizeof(global_nvs_t); ALIGN_CURRENT; -- cgit v1.2.3