acpi: Move acpi_add_table() to generic code
Move this code to a generic location so that we can test it with sandbox.
This requires adding a few new fields to acpi_ctx, so drop the local
variables used in the original code.
Also use mapmem to avoid pointer-to-address casts which don't work on
sandbox.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c
index de1acb0..ff8cee5 100644
--- a/arch/x86/lib/acpi_table.c
+++ b/arch/x86/lib/acpi_table.c
@@ -83,67 +83,6 @@
sizeof(struct acpi_xsdt));
}
-/**
- * Add an ACPI table to the RSDT (and XSDT) structure, recalculate length
- * and checksum.
- */
-static void acpi_add_table(struct acpi_rsdp *rsdp, void *table)
-{
- int i, entries_num;
- struct acpi_rsdt *rsdt;
- struct acpi_xsdt *xsdt;
-
- /* The RSDT is mandatory while the XSDT is not */
- rsdt = (struct acpi_rsdt *)rsdp->rsdt_address;
-
- /* This should always be MAX_ACPI_TABLES */
- entries_num = ARRAY_SIZE(rsdt->entry);
-
- for (i = 0; i < entries_num; i++) {
- if (rsdt->entry[i] == 0)
- break;
- }
-
- if (i >= entries_num) {
- debug("ACPI: Error: too many tables\n");
- return;
- }
-
- /* Add table to the RSDT */
- rsdt->entry[i] = (u32)table;
-
- /* Fix RSDT length or the kernel will assume invalid entries */
- rsdt->header.length = sizeof(struct acpi_table_header) +
- sizeof(u32) * (i + 1);
-
- /* Re-calculate checksum */
- rsdt->header.checksum = 0;
- rsdt->header.checksum = table_compute_checksum((u8 *)rsdt,
- rsdt->header.length);
-
- /* The RSDT is mandatory while the XSDT is not */
- if (!rsdp->xsdt_address)
- return;
-
- /*
- * 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);
-
- /* Add table to the XSDT */
- xsdt->entry[i] = (u64)(u32)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((u8 *)xsdt,
- xsdt->header.length);
-}
-
static void acpi_create_facs(struct acpi_facs *facs)
{
memset((void *)facs, 0, sizeof(struct acpi_facs));
@@ -472,8 +411,6 @@
ulong write_acpi_tables(ulong start_addr)
{
struct acpi_ctx sctx, *ctx = &sctx;
- struct acpi_rsdp *rsdp;
- struct acpi_rsdt *rsdt;
struct acpi_xsdt *xsdt;
struct acpi_facs *facs;
struct acpi_table_header *dsdt;
@@ -495,9 +432,9 @@
debug("ACPI: Writing ACPI tables at %lx\n", start_addr);
/* We need at least an RSDP and an RSDT Table */
- rsdp = ctx->current;
+ ctx->rsdp = ctx->current;
acpi_inc_align(ctx, sizeof(struct acpi_rsdp));
- rsdt = ctx->current;
+ ctx->rsdt = ctx->current;
acpi_inc_align(ctx, sizeof(struct acpi_rsdt));
xsdt = ctx->current;
acpi_inc_align(ctx, sizeof(struct acpi_xsdt));
@@ -510,8 +447,8 @@
/* clear all table memory */
memset((void *)start, 0, ctx->current - start);
- acpi_write_rsdp(rsdp, rsdt, xsdt);
- acpi_write_rsdt(rsdt);
+ acpi_write_rsdp(ctx->rsdp, ctx->rsdt, xsdt);
+ acpi_write_rsdt(ctx->rsdt);
acpi_write_xsdt(xsdt);
debug("ACPI: * FACS\n");
@@ -553,38 +490,38 @@
fadt = ctx->current;
acpi_inc_align(ctx, sizeof(struct acpi_fadt));
acpi_create_fadt(fadt, facs, dsdt);
- acpi_add_table(rsdp, fadt);
+ acpi_add_table(ctx, fadt);
debug("ACPI: * MADT\n");
madt = ctx->current;
acpi_create_madt(madt);
acpi_inc_align(ctx, madt->header.length);
- acpi_add_table(rsdp, madt);
+ acpi_add_table(ctx, madt);
debug("ACPI: * MCFG\n");
mcfg = ctx->current;
acpi_create_mcfg(mcfg);
acpi_inc_align(ctx, mcfg->header.length);
- acpi_add_table(rsdp, mcfg);
+ acpi_add_table(ctx, mcfg);
debug("ACPI: * CSRT\n");
csrt = ctx->current;
acpi_create_csrt(csrt);
acpi_inc_align(ctx, csrt->header.length);
- acpi_add_table(rsdp, csrt);
+ acpi_add_table(ctx, csrt);
debug("ACPI: * SPCR\n");
spcr = ctx->current;
acpi_create_spcr(spcr);
acpi_inc_align(ctx, spcr->header.length);
- acpi_add_table(rsdp, spcr);
+ acpi_add_table(ctx, spcr);
acpi_write_dev_tables(ctx);
addr = map_to_sysmem(ctx->current);
debug("current = %lx\n", addr);
- acpi_rsdp_addr = (unsigned long)rsdp;
+ acpi_rsdp_addr = (unsigned long)ctx->rsdp;
debug("ACPI: done\n");
return addr;