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https://github.com/AsahiLinux/u-boot
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acpi: Put table-setup code in its own function
We always write three basic tables to ACPI at the start. Move this into its own function, along with acpi_fill_header(), so we can write a test for this code. Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
Bin Meng
parent
29b351122e
commit
7e586f6907
4 changed files with 147 additions and 86 deletions
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@ -31,58 +31,6 @@ extern const unsigned char AmlCode[];
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/* ACPI RSDP address to be used in boot parameters */
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static ulong acpi_rsdp_addr;
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static void acpi_write_rsdp(struct acpi_rsdp *rsdp, struct acpi_rsdt *rsdt,
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struct acpi_xsdt *xsdt)
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{
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memset(rsdp, 0, sizeof(struct acpi_rsdp));
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memcpy(rsdp->signature, RSDP_SIG, 8);
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memcpy(rsdp->oem_id, OEM_ID, 6);
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rsdp->length = sizeof(struct acpi_rsdp);
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rsdp->rsdt_address = (u32)rsdt;
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rsdp->xsdt_address = (u64)(u32)xsdt;
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rsdp->revision = ACPI_RSDP_REV_ACPI_2_0;
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/* Calculate checksums */
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rsdp->checksum = table_compute_checksum((void *)rsdp, 20);
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rsdp->ext_checksum = table_compute_checksum((void *)rsdp,
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sizeof(struct acpi_rsdp));
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}
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static void acpi_write_rsdt(struct acpi_rsdt *rsdt)
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{
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struct acpi_table_header *header = &(rsdt->header);
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/* Fill out header fields */
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acpi_fill_header(header, "RSDT");
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header->length = sizeof(struct acpi_rsdt);
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header->revision = 1;
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/* Entries are filled in later, we come with an empty set */
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/* Fix checksum */
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header->checksum = table_compute_checksum((void *)rsdt,
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sizeof(struct acpi_rsdt));
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}
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static void acpi_write_xsdt(struct acpi_xsdt *xsdt)
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{
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struct acpi_table_header *header = &(xsdt->header);
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/* Fill out header fields */
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acpi_fill_header(header, "XSDT");
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header->length = sizeof(struct acpi_xsdt);
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header->revision = 1;
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/* Entries are filled in later, we come with an empty set */
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/* Fix checksum */
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header->checksum = table_compute_checksum((void *)xsdt,
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sizeof(struct acpi_xsdt));
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}
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static void acpi_create_facs(struct acpi_facs *facs)
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{
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memset((void *)facs, 0, sizeof(struct acpi_facs));
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@ -411,7 +359,6 @@ static void acpi_create_spcr(struct acpi_spcr *spcr)
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ulong write_acpi_tables(ulong start_addr)
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{
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struct acpi_ctx sctx, *ctx = &sctx;
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struct acpi_xsdt *xsdt;
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struct acpi_facs *facs;
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struct acpi_table_header *dsdt;
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struct acpi_fadt *fadt;
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@ -424,32 +371,10 @@ ulong write_acpi_tables(ulong start_addr)
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int i;
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start = map_sysmem(start_addr, 0);
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ctx->current = start;
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/* Align ACPI tables to 16 byte */
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acpi_align(ctx);
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debug("ACPI: Writing ACPI tables at %lx\n", start_addr);
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/* We need at least an RSDP and an RSDT Table */
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ctx->rsdp = ctx->current;
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acpi_inc_align(ctx, sizeof(struct acpi_rsdp));
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ctx->rsdt = ctx->current;
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acpi_inc_align(ctx, sizeof(struct acpi_rsdt));
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xsdt = ctx->current;
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acpi_inc_align(ctx, sizeof(struct acpi_xsdt));
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/*
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* Per ACPI spec, the FACS table address must be aligned to a 64 byte
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* boundary (Windows checks this, but Linux does not).
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*/
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acpi_align64(ctx);
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/* clear all table memory */
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memset((void *)start, 0, ctx->current - start);
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acpi_write_rsdp(ctx->rsdp, ctx->rsdt, xsdt);
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acpi_write_rsdt(ctx->rsdt);
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acpi_write_xsdt(xsdt);
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acpi_setup_base_tables(ctx, start);
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debug("ACPI: * FACS\n");
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facs = ctx->current;
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@ -560,6 +560,16 @@ void acpi_inc_align(struct acpi_ctx *ctx, uint amount);
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*/
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int acpi_add_table(struct acpi_ctx *ctx, void *table);
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/**
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* acpi_setup_base_tables() - Set up context along with RSDP, RSDT and XSDT
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*
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* Set up the context with the given start position. Some basic tables are
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* always needed, so set them up as well.
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*
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* @ctx: Context to set up
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*/
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void acpi_setup_base_tables(struct acpi_ctx *ctx, void *start);
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#endif /* !__ACPI__*/
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#include <asm/acpi_table.h>
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@ -181,3 +181,85 @@ int acpi_add_table(struct acpi_ctx *ctx, void *table)
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return 0;
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}
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static void acpi_write_rsdp(struct acpi_rsdp *rsdp, struct acpi_rsdt *rsdt,
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struct acpi_xsdt *xsdt)
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{
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memset(rsdp, 0, sizeof(struct acpi_rsdp));
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memcpy(rsdp->signature, RSDP_SIG, 8);
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memcpy(rsdp->oem_id, OEM_ID, 6);
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rsdp->length = sizeof(struct acpi_rsdp);
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rsdp->rsdt_address = map_to_sysmem(rsdt);
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rsdp->xsdt_address = map_to_sysmem(xsdt);
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rsdp->revision = ACPI_RSDP_REV_ACPI_2_0;
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/* Calculate checksums */
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rsdp->checksum = table_compute_checksum(rsdp, 20);
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rsdp->ext_checksum = table_compute_checksum(rsdp,
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sizeof(struct acpi_rsdp));
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}
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static void acpi_write_rsdt(struct acpi_rsdt *rsdt)
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{
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struct acpi_table_header *header = &rsdt->header;
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/* Fill out header fields */
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acpi_fill_header(header, "RSDT");
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header->length = sizeof(struct acpi_rsdt);
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header->revision = 1;
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/* Entries are filled in later, we come with an empty set */
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/* Fix checksum */
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header->checksum = table_compute_checksum(rsdt,
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sizeof(struct acpi_rsdt));
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}
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static void acpi_write_xsdt(struct acpi_xsdt *xsdt)
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{
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struct acpi_table_header *header = &xsdt->header;
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/* Fill out header fields */
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acpi_fill_header(header, "XSDT");
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header->length = sizeof(struct acpi_xsdt);
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header->revision = 1;
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/* Entries are filled in later, we come with an empty set */
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/* Fix checksum */
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header->checksum = table_compute_checksum(xsdt,
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sizeof(struct acpi_xsdt));
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}
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void acpi_setup_base_tables(struct acpi_ctx *ctx, void *start)
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{
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struct acpi_xsdt *xsdt;
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ctx->current = start;
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/* Align ACPI tables to 16 byte */
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acpi_align(ctx);
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/* We need at least an RSDP and an RSDT Table */
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ctx->rsdp = ctx->current;
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acpi_inc_align(ctx, sizeof(struct acpi_rsdp));
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ctx->rsdt = ctx->current;
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acpi_inc_align(ctx, sizeof(struct acpi_rsdt));
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xsdt = ctx->current;
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acpi_inc_align(ctx, sizeof(struct acpi_xsdt));
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/* clear all table memory */
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memset((void *)start, '\0', ctx->current - start);
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acpi_write_rsdp(ctx->rsdp, ctx->rsdt, xsdt);
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acpi_write_rsdt(ctx->rsdt);
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acpi_write_xsdt(xsdt);
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/*
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* Per ACPI spec, the FACS table address must be aligned to a 64 byte
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* boundary (Windows checks this, but Linux does not).
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*/
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acpi_align64(ctx);
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}
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@ -8,7 +8,9 @@
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#include <common.h>
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#include <dm.h>
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#include <malloc.h>
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#include <mapmem.h>
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#include <tables_csum.h>
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#include <version.h>
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#include <acpi/acpi_table.h>
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#include <dm/acpi.h>
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@ -132,23 +134,14 @@ DM_TEST(dm_test_acpi_fill_header, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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static int dm_test_acpi_write_tables(struct unit_test_state *uts)
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{
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struct acpi_dmar *dmar;
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struct acpi_xsdt *xsdt;
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struct acpi_ctx ctx;
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void *buf;
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buf = malloc(BUF_SIZE);
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ut_assertnonnull(buf);
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ctx.current = buf;
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ctx.rsdp = ctx.current;
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acpi_inc_align(&ctx, sizeof(struct acpi_rsdp));
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ctx.rsdt = ctx.current;
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acpi_inc_align(&ctx, sizeof(struct acpi_rsdt));
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xsdt = ctx.current;
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acpi_inc_align(&ctx, sizeof(struct acpi_xsdt));
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ctx.rsdp->xsdt_address = map_to_sysmem(xsdt);
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acpi_setup_base_tables(&ctx, buf);
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dmar = ctx.current;
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ut_assertok(acpi_write_dev_tables(&ctx));
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/*
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@ -162,6 +155,11 @@ static int dm_test_acpi_write_tables(struct unit_test_state *uts)
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ut_asserteq(DMAR_INTR_REMAP, dmar[1].flags);
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ut_asserteq(32 - 1, dmar[1].host_address_width);
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/* Check that the pointers were added correctly */
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ut_asserteq(map_to_sysmem(dmar), ctx.rsdt->entry[0]);
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ut_asserteq(map_to_sysmem(dmar + 1), ctx.rsdt->entry[1]);
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ut_asserteq(0, ctx.rsdt->entry[2]);
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return 0;
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}
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DM_TEST(dm_test_acpi_write_tables, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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@ -193,3 +191,49 @@ static int dm_test_acpi_basic(struct unit_test_state *uts)
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return 0;
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}
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DM_TEST(dm_test_acpi_basic, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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/* Test acpi_setup_base_tables */
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static int dm_test_acpi_setup_base_tables(struct unit_test_state *uts)
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{
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struct acpi_rsdp *rsdp;
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struct acpi_rsdt *rsdt;
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struct acpi_xsdt *xsdt;
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struct acpi_ctx ctx;
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void *buf, *end;
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/*
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* Use an unaligned address deliberately, by allocating an aligned
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* address and then adding 4 to it
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*/
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buf = memalign(64, BUF_SIZE);
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ut_assertnonnull(buf);
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acpi_setup_base_tables(&ctx, buf + 4);
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rsdp = buf + 16;
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ut_asserteq_ptr(rsdp, ctx.rsdp);
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ut_assertok(memcmp(RSDP_SIG, rsdp->signature, sizeof(rsdp->signature)));
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ut_asserteq(sizeof(*rsdp), rsdp->length);
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ut_assertok(table_compute_checksum(rsdp, 20));
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ut_assertok(table_compute_checksum(rsdp, sizeof(*rsdp)));
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rsdt = PTR_ALIGN((void *)rsdp + sizeof(*rsdp), 16);
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ut_asserteq_ptr(rsdt, ctx.rsdt);
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ut_assertok(memcmp("RSDT", rsdt->header.signature, ACPI_NAME_LEN));
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ut_asserteq(sizeof(*rsdt), rsdt->header.length);
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ut_assertok(table_compute_checksum(rsdt, sizeof(*rsdt)));
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xsdt = PTR_ALIGN((void *)rsdt + sizeof(*rsdt), 16);
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ut_assertok(memcmp("XSDT", xsdt->header.signature, ACPI_NAME_LEN));
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ut_asserteq(sizeof(*xsdt), xsdt->header.length);
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ut_assertok(table_compute_checksum(xsdt, sizeof(*xsdt)));
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end = PTR_ALIGN((void *)xsdt + sizeof(*xsdt), 64);
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ut_asserteq_ptr(end, ctx.current);
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ut_asserteq(map_to_sysmem(rsdt), rsdp->rsdt_address);
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ut_asserteq(map_to_sysmem(xsdt), rsdp->xsdt_address);
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return 0;
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}
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DM_TEST(dm_test_acpi_setup_base_tables,
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DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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