From 2d7bd8a6ebf6844b0cdef80eaaef69f39d08f076 Mon Sep 17 00:00:00 2001 From: Vladimir Serbinenko Date: Sat, 30 Aug 2014 19:28:05 +0200 Subject: Implement ACPI in a per device way This approach avoids having same basic tables 150-lines mantra over 100 times in codebase. Change-Id: I76fb2fbcb9ca0654f2e5fd5d90bd62392165777c Signed-off-by: Vladimir Serbinenko Reviewed-on: http://review.coreboot.org/6801 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan Reviewed-by: Aaron Durbin --- src/arch/x86/boot/acpi.c | 151 ++++++++++++++++++++++++++++++++++++++- src/arch/x86/include/arch/acpi.h | 3 + 2 files changed, 152 insertions(+), 2 deletions(-) (limited to 'src/arch') diff --git a/src/arch/x86/boot/acpi.c b/src/arch/x86/boot/acpi.c index d76882a216..3bfa3bdaaf 100644 --- a/src/arch/x86/boot/acpi.c +++ b/src/arch/x86/boot/acpi.c @@ -247,15 +247,17 @@ void acpi_create_mcfg(acpi_mcfg_t *mcfg) header->checksum = acpi_checksum((void *)mcfg, header->length); } +#if !IS_ENABLED(CONFIG_PER_DEVICE_ACPI_TABLES) /* * This can be overridden by platform ACPI setup code, if it calls * acpi_create_ssdt_generator(). */ unsigned long __attribute__((weak)) acpi_fill_ssdt_generator( - unsigned long current, const char *oem_table_id) + unsigned long current, const char *oem_table_id) { return current; } +#endif void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id) { @@ -273,7 +275,17 @@ void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id) ssdt->length = sizeof(acpi_header_t); acpigen_set_current((char *) current); - current = acpi_fill_ssdt_generator(current, oem_table_id); + { +#if IS_ENABLED(CONFIG_PER_DEVICE_ACPI_TABLES) + device_t dev; + for (dev = all_devices; dev; dev = dev->next) + if (dev->ops && dev->ops->acpi_fill_ssdt_generator) { + current = dev->ops->acpi_fill_ssdt_generator(current, oem_table_id); + } +#else + current = acpi_fill_ssdt_generator(current, oem_table_id); +#endif + } /* (Re)calculate length and checksum. */ ssdt->length = current - (unsigned long)ssdt; @@ -455,6 +467,24 @@ void acpi_create_hpet(acpi_hpet_t *hpet) header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t)); } +unsigned long acpi_write_hpet(unsigned long current, acpi_rsdp_t *rsdp) +{ + acpi_hpet_t *hpet; + + /* + * We explicitly add these tables later on: + */ + printk(BIOS_DEBUG, "ACPI: * HPET\n"); + + hpet = (acpi_hpet_t *) current; + current += sizeof(acpi_hpet_t); + current = ALIGN(current, 16); + acpi_create_hpet(hpet); + acpi_add_table(rsdp, hpet); + + return current; +} + void acpi_create_facs(acpi_facs_t *facs) { memset((void *)facs, 0, sizeof(acpi_facs_t)); @@ -620,6 +650,123 @@ void acpi_write_hest(acpi_hest_t *hest) header->checksum = acpi_checksum((void *)hest, header->length); } +#if IS_ENABLED(CONFIG_PER_DEVICE_ACPI_TABLES) + +extern const unsigned char AmlCode[]; + +#define ALIGN_CURRENT current = (ALIGN(current, 16)) +unsigned long write_acpi_tables(unsigned long start) +{ + unsigned long current; + acpi_rsdp_t *rsdp; + acpi_rsdt_t *rsdt; + acpi_xsdt_t *xsdt; + acpi_fadt_t *fadt; + acpi_facs_t *facs; +#if CONFIG_HAVE_ACPI_SLIC + acpi_header_t *slic; +#endif + acpi_header_t *ssdt; + acpi_header_t *dsdt; + acpi_mcfg_t *mcfg; + acpi_madt_t *madt; + device_t dev; + + current = start; + + /* Align ACPI tables to 16byte */ + ALIGN_CURRENT; + + printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx.\n", start); + + /* We need at least an RSDP and an RSDT Table */ + rsdp = (acpi_rsdp_t *) current; + current += sizeof(acpi_rsdp_t); + ALIGN_CURRENT; + rsdt = (acpi_rsdt_t *) current; + current += sizeof(acpi_rsdt_t); + ALIGN_CURRENT; + xsdt = (acpi_xsdt_t *) current; + current += sizeof(acpi_xsdt_t); + ALIGN_CURRENT; + + /* clear all table memory */ + memset((void *) start, 0, current - start); + + acpi_write_rsdp(rsdp, rsdt, xsdt); + acpi_write_rsdt(rsdt); + acpi_write_xsdt(xsdt); + + printk(BIOS_DEBUG, "ACPI: * FACS\n"); + facs = (acpi_facs_t *) current; + current += sizeof(acpi_facs_t); + ALIGN_CURRENT; + acpi_create_facs(facs); + + printk(BIOS_DEBUG, "ACPI: * DSDT\n"); + dsdt = (acpi_header_t *) current; + memcpy(dsdt, &AmlCode, sizeof(acpi_header_t)); + current += dsdt->length; + memcpy(dsdt, &AmlCode, dsdt->length); + + ALIGN_CURRENT; + + printk(BIOS_DEBUG, "ACPI: * FADT\n"); + fadt = (acpi_fadt_t *) current; + current += sizeof(acpi_fadt_t); + ALIGN_CURRENT; + + acpi_create_fadt(fadt, facs, dsdt); + acpi_add_table(rsdp, fadt); + +#if CONFIG_HAVE_ACPI_SLIC + printk(BIOS_DEBUG, "ACPI: * SLIC\n"); + slic = (acpi_header_t *)current; + current += acpi_create_slic(current); + ALIGN_CURRENT; + acpi_add_table(rsdp, slic); +#endif + + printk(BIOS_DEBUG, "ACPI: * SSDT\n"); + ssdt = (acpi_header_t *)current; + acpi_create_ssdt_generator(ssdt, ACPI_TABLE_CREATOR); + current += ssdt->length; + acpi_add_table(rsdp, ssdt); + ALIGN_CURRENT; + + printk(BIOS_DEBUG, "ACPI: * MCFG\n"); + mcfg = (acpi_mcfg_t *) current; + acpi_create_mcfg(mcfg); + if (mcfg->header.length > sizeof(acpi_mcfg_t)) { + current += mcfg->header.length; + ALIGN_CURRENT; + acpi_add_table(rsdp, mcfg); + } + + printk(BIOS_DEBUG, "ACPI: * MADT\n"); + + madt = (acpi_madt_t *) current; + acpi_create_madt(madt); + if (madt->header.length > sizeof(acpi_madt_t)) { + current+=madt->header.length; + acpi_add_table(rsdp,madt); + } + ALIGN_CURRENT; + + printk(BIOS_DEBUG, "current = %lx\n", current); + + for (dev = all_devices; dev; dev = dev->next) { + if (dev->ops && dev->ops->write_acpi_tables) { + current = dev->ops->write_acpi_tables(current, rsdp); + ALIGN_CURRENT; + } + } + + printk(BIOS_INFO, "ACPI: done.\n"); + return current; +} +#endif + #if CONFIG_HAVE_ACPI_RESUME void acpi_resume(void *wake_vec) { diff --git a/src/arch/x86/include/arch/acpi.h b/src/arch/x86/include/arch/acpi.h index 9039a90201..4adf89e3f8 100644 --- a/src/arch/x86/include/arch/acpi.h +++ b/src/arch/x86/include/arch/acpi.h @@ -490,8 +490,10 @@ unsigned long acpi_fill_madt(unsigned long current); unsigned long acpi_fill_mcfg(unsigned long current); unsigned long acpi_fill_srat(unsigned long current); unsigned long acpi_fill_slit(unsigned long current); +#if !IS_ENABLED(CONFIG_PER_DEVICE_ACPI_TABLES) unsigned long acpi_fill_ssdt_generator(unsigned long current, const char *oem_table_id); +#endif void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id); void acpi_create_fadt(acpi_fadt_t *fadt,acpi_facs_t *facs, void *dsdt); @@ -526,6 +528,7 @@ void acpi_create_srat(acpi_srat_t *srat); void acpi_create_slit(acpi_slit_t *slit); void acpi_create_hpet(acpi_hpet_t *hpet); +unsigned long acpi_write_hpet(unsigned long start, acpi_rsdp_t *rsdp); void acpi_create_mcfg(acpi_mcfg_t *mcfg); -- cgit v1.2.3