@@ -33,11 +33,13 @@
* @rsdp: Pointer to the Root System Description Pointer, typically used when
* adding a new table. The RSDP holds pointers to the RSDP and XSDT.
* @rsdt: Pointer to the Root System Description Table
+ * @xsdt: Pointer to the Extended System Description Table
*/
struct acpi_ctx {
void *current;
struct acpi_rsdp *rsdp;
struct acpi_rsdt *rsdt;
+ struct acpi_xsdt *xsdt;
};
/**
@@ -126,13 +126,11 @@ int acpi_add_table(struct acpi_ctx *ctx, void *table)
{
int i, entries_num;
struct acpi_rsdt *rsdt;
- struct acpi_xsdt *xsdt = NULL;
+ struct acpi_xsdt *xsdt;
/* The RSDT is mandatory while the XSDT is not */
rsdt = ctx->rsdt;
-
- if (ctx->rsdp->xsdt_address)
- xsdt = map_sysmem(ctx->rsdp->xsdt_address, 0);
+ xsdt = ctx->xsdt;
/* This should always be MAX_ACPI_TABLES */
entries_num = ARRAY_SIZE(rsdt->entry);
@@ -163,19 +161,17 @@ int acpi_add_table(struct acpi_ctx *ctx, void *table)
* And now the same thing for the XSDT. We use the same index as for
* now we want the XSDT and RSDT to always be in sync in U-Boot
*/
- if (xsdt) {
- /* Add table to the XSDT */
- xsdt->entry[i] = map_to_sysmem(table);
-
- /* Fix XSDT length */
- xsdt->header.length = sizeof(struct acpi_table_header) +
- (sizeof(u64) * (i + 1));
-
- /* Re-calculate checksum */
- xsdt->header.checksum = 0;
- xsdt->header.checksum =
- table_compute_checksum((xsdt, xsdt->header.length);
- }
+ /* Add table to the XSDT */
+ xsdt->entry[i] = map_to_sysmem(table);
+
+ /* Fix XSDT length */
+ xsdt->header.length = sizeof(struct acpi_table_header) +
+ (sizeof(u64) * (i + 1));
+
+ /* Re-calculate checksum */
+ xsdt->header.checksum = 0;
+ xsdt->header.checksum = table_compute_checksum(xsdt,
+ xsdt->header.length);
return 0;
}
@@ -234,8 +230,6 @@ static void acpi_write_xsdt(struct acpi_xsdt *xsdt)
void acpi_setup_base_tables(struct acpi_ctx *ctx, void *start)
{
- struct acpi_xsdt *xsdt;
-
ctx->current = start;
/* Align ACPI tables to 16 byte */
@@ -246,7 +240,7 @@ void acpi_setup_base_tables(struct acpi_ctx *ctx, void *start)
acpi_inc_align(ctx, sizeof(struct acpi_rsdp));
ctx->rsdt = ctx->current;
acpi_inc_align(ctx, sizeof(struct acpi_rsdt));
- xsdt = ctx->current;
+ ctx->xsdt = ctx->current;
acpi_inc_align(ctx, sizeof(struct acpi_xsdt));
/*
* Per ACPI spec, the FACS table address must be aligned to a 64 byte
@@ -257,7 +251,7 @@ void acpi_setup_base_tables(struct acpi_ctx *ctx, void *start)
/* clear all table memory */
memset((void *)start, '\0', ctx->current - start);
- acpi_write_rsdp(ctx->rsdp, ctx->rsdt, xsdt);
+ acpi_write_rsdp(ctx->rsdp, ctx->rsdt, ctx->xsdt);
acpi_write_rsdt(ctx->rsdt);
- acpi_write_xsdt(xsdt);
+ acpi_write_xsdt(ctx->xsdt);
}
@@ -161,6 +161,10 @@ static int dm_test_acpi_write_tables(struct unit_test_state *uts)
ut_asserteq(map_to_sysmem(dmar + 1), ctx.rsdt->entry[1]);
ut_asserteq(0, ctx.rsdt->entry[2]);
+ ut_asserteq(map_to_sysmem(dmar), ctx.xsdt->entry[0]);
+ ut_asserteq(map_to_sysmem(dmar + 1), ctx.xsdt->entry[1]);
+ ut_asserteq(0, ctx.xsdt->entry[2]);
+
return 0;
}
DM_TEST(dm_test_acpi_write_tables, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
@@ -221,6 +225,7 @@ static int dm_test_acpi_setup_base_tables(struct unit_test_state *uts)
ut_assertok(table_compute_checksum(rsdt, sizeof(*rsdt)));
xsdt = PTR_ALIGN((void *)rsdt + sizeof(*rsdt), 16);
+ ut_asserteq_ptr(xsdt, ctx.xsdt);
ut_assertok(memcmp("XSDT", xsdt->header.signature, ACPI_NAME_LEN));
ut_asserteq(sizeof(*xsdt), xsdt->header.length);
ut_assertok(table_compute_checksum(xsdt, sizeof(*xsdt)));
Put this in the context along with the other important pointers. Signed-off-by: Simon Glass <sjg at chromium.org> --- include/dm/acpi.h | 2 ++ lib/acpi/acpi_table.c | 38 ++++++++++++++++---------------------- test/dm/acpi.c | 5 +++++ 3 files changed, 23 insertions(+), 22 deletions(-)