diff options
author | Simon Glass <sjg@chromium.org> | 2020-04-26 18:19:50 +0300 |
---|---|---|
committer | Bin Meng <bmeng.cn@gmail.com> | 2020-04-30 12:16:12 +0300 |
commit | 29b351122ed23124f70473a411c65074d5a61146 (patch) | |
tree | 3291b96b1660fcc0fad1db917def8f2f14768370 /arch | |
parent | 288edc78213433526e42cbc7c3dabca4fdf8e671 (diff) | |
download | u-boot-29b351122ed23124f70473a411c65074d5a61146.tar.xz |
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>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/lib/acpi_table.c | 83 |
1 files changed, 10 insertions, 73 deletions
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c index de1acb0ebb..ff8cee51d6 100644 --- a/arch/x86/lib/acpi_table.c +++ b/arch/x86/lib/acpi_table.c @@ -83,67 +83,6 @@ static void acpi_write_xsdt(struct acpi_xsdt *xsdt) 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 @@ static void acpi_create_spcr(struct acpi_spcr *spcr) 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 @@ ulong write_acpi_tables(ulong start_addr) 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 @@ ulong write_acpi_tables(ulong start_addr) /* 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 @@ ulong write_acpi_tables(ulong start_addr) 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; |