[PATCH v3 28/29] acpi: Move the xsdt pointer to acpi_ctx

Simon Glass
2020-03-30T23:13:04Z

Put this in the context along with the other important pointers.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
---

Changes in v3: None
Changes in v2: None

include/dm/acpi.h | 2 ++
lib/acpi/acpi_table.c | 10 ++++------
test/dm/acpi.c | 5 +++++
3 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/include/dm/acpi.h b/include/dm/acpi.h
index ee6f7a63e79..288310b5128 100644
--- a/include/dm/acpi.h
+++ b/include/dm/acpi.h
@@ -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 RSDT 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;
};

/**
diff --git a/lib/acpi/acpi_table.c b/lib/acpi/acpi_table.c
index 70d29c53881..28003dc8f46 100644
--- a/lib/acpi/acpi_table.c
+++ b/lib/acpi/acpi_table.c
@@ -163,7 +163,7 @@ 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
*/
- xsdt = (struct acpi_xsdt *)((u32)rsdp->xsdt_address);
+ xsdt = ctx->xsdt;

/* Add table to the XSDT */
xsdt->entry[i] = map_to_sysmem(table);
@@ -234,8 +234,6 @@ 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 */
@@ -246,13 +244,13 @@ 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));

/* 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);
}
diff --git a/test/dm/acpi.c b/test/dm/acpi.c
index 5d5e46e2944..8e160d2cf4e 100644
--- a/test/dm/acpi.c
+++ b/test/dm/acpi.c
@@ -160,6 +160,10 @@ 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);
@@ -223,6 +227,7 @@ 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)));
--
2.26.0.rc2.310.g2932bb562d-goog