diff options
| author | Naresh Solanki <naresh.solanki@9elements.com> | 2023-09-13 12:01:58 +0200 |
|---|---|---|
| committer | Lean Sheng Tan <sheng.tan@9elements.com> | 2023-12-06 13:06:22 +0000 |
| commit | 6920c6f232600cc828ac102bc0636043b4b956c9 (patch) | |
| tree | 0984cac4986a4f0f38f2b8aa3c6f236529985adf /src/acpi | |
| parent | 67b3c8f278312768a25f0ad07569e22288d0a11f (diff) | |
acpi: Add IO Remapping Table structures
Input Output Remapping Table (IORT) represents the IO topology of an Arm
based system.
Document number: ARM DEN 0049E.e, Sep 2022
Change-Id: I4e8e3323caa714a56882939914cac510bf95d30b
Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77884
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src/acpi')
| -rw-r--r-- | src/acpi/Kconfig | 6 | ||||
| -rw-r--r-- | src/acpi/acpi.c | 24 |
2 files changed, 30 insertions, 0 deletions
diff --git a/src/acpi/Kconfig b/src/acpi/Kconfig index cf51969e41..83d18bf62f 100644 --- a/src/acpi/Kconfig +++ b/src/acpi/Kconfig @@ -86,6 +86,12 @@ config ACPI_GTDT help Selected by platforms that implement ARM generic timers +config ACPI_IORT + def_bool n + depends on ARCH_ARM64 && HAVE_ACPI_TABLES + help + Selected by platforms that implement ARM IO Remap table. + config MAX_ACPI_TABLE_SIZE_KB int default 144 diff --git a/src/acpi/acpi.c b/src/acpi/acpi.c index c4d55ab453..f9e9162545 100644 --- a/src/acpi/acpi.c +++ b/src/acpi/acpi.c @@ -14,6 +14,7 @@ */ #include <acpi/acpi.h> +#include <acpi/acpi_iort.h> #include <acpi/acpi_ivrs.h> #include <acpi/acpigen.h> #include <cbfs.h> @@ -1194,6 +1195,26 @@ unsigned long acpi_gtdt_add_watchdog(unsigned long current, uint64_t refresh_fra return current + sizeof(struct acpi_gtdt_watchdog); } +static void acpi_create_iort(acpi_header_t *header, void *unused) +{ + if (!CONFIG(ACPI_IORT)) + return; + + acpi_iort_t *iort = (acpi_iort_t *)header; + unsigned long current = (unsigned long)iort + sizeof(acpi_iort_t); + + if (acpi_fill_header(header, "IORT", IORT, sizeof(acpi_iort_t)) != CB_SUCCESS) + return; + + iort->node_count = 0; + iort->node_offset = current - (unsigned long)iort; + + current = acpi_soc_fill_iort(iort, current); + + /* (Re)calculate length */ + header->length = current - (unsigned long)iort; +} + unsigned long acpi_create_lpi_desc_ncst(acpi_lpi_desc_ncst_t *lpi_desc, uint16_t uid) { memset(lpi_desc, 0, sizeof(acpi_lpi_desc_ncst_t)); @@ -1409,6 +1430,7 @@ unsigned long write_acpi_tables(const unsigned long start) { acpi_create_spcr, NULL, sizeof(acpi_spcr_t) }, { acpi_create_gtdt, NULL, sizeof(acpi_gtdt_t) }, { acpi_create_pptt, NULL, sizeof(acpi_pptt_t) }, + { acpi_create_iort, NULL, sizeof(acpi_iort_t) }, }; current = start; @@ -1760,6 +1782,8 @@ int get_acpi_table_revision(enum acpi_tables table) return 3; case PPTT: /* ACPI 6.4 */ return 3; + case IORT: /* IO Remapping Table E.e */ + return 6; default: return -1; } |