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9c0418852b
In case of UEFI, RSDP doesn't have to be located in lowmem, it could be placed at any address. Make sure that test won't break if it is placed above the first 4Gb of address space. PS: While at it cleanup some local variables as we don't really need them. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <1556808723-226478-5-git-send-email-imammedo@redhat.com> Reviewed-by: Wei Yang <richardw.yang@linux.intel.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/*
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* ACPI Utility Functions
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*
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* Copyright (c) 2013 Red Hat Inc.
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* Copyright (c) 2017 Skyport Systems
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*
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* Authors:
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* Michael S. Tsirkin <mst@redhat.com>,
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* Ben Warren <ben@skyportsystems.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include <glib/gstdio.h>
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#include "qemu-common.h"
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#include "qemu/bitmap.h"
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#include "acpi-utils.h"
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#include "boot-sector.h"
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uint8_t acpi_calc_checksum(const uint8_t *data, int len)
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{
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int i;
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uint8_t sum = 0;
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for (i = 0; i < len; i++) {
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sum += data[i];
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}
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return sum;
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}
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uint32_t acpi_find_rsdp_address(QTestState *qts)
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{
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uint32_t off;
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/* RSDP location can vary across a narrow range */
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for (off = 0xf0000; off < 0x100000; off += 0x10) {
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uint8_t sig[] = "RSD PTR ";
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int i;
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for (i = 0; i < sizeof sig - 1; ++i) {
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sig[i] = qtest_readb(qts, off + i);
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}
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if (!memcmp(sig, "RSD PTR ", sizeof sig)) {
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break;
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}
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}
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return off;
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}
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void acpi_fetch_rsdp_table(QTestState *qts, uint64_t addr, uint8_t *rsdp_table)
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{
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uint8_t revision;
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/* Read mandatory revision 0 table data (20 bytes) first */
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qtest_memread(qts, addr, rsdp_table, 20);
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revision = rsdp_table[15 /* Revision offset */];
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switch (revision) {
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case 0: /* ACPI 1.0 RSDP */
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break;
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case 2: /* ACPI 2.0+ RSDP */
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/* Read the rest of the RSDP table */
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qtest_memread(qts, addr + 20, rsdp_table + 20, 16);
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break;
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default:
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g_assert_not_reached();
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}
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ACPI_ASSERT_CMP64(*((uint64_t *)(rsdp_table)), "RSD PTR ");
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}
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/** acpi_fetch_table
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* load ACPI table at @addr_ptr offset pointer into buffer and return it in
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* @aml, its length in @aml_len and check that signature/checksum matches
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* actual one.
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*/
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void acpi_fetch_table(QTestState *qts, uint8_t **aml, uint32_t *aml_len,
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const uint8_t *addr_ptr, int addr_size, const char *sig,
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bool verify_checksum)
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{
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uint32_t len;
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uint64_t addr = 0;
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g_assert(addr_size == 4 || addr_size == 8);
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memcpy(&addr, addr_ptr , addr_size);
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addr = le64_to_cpu(addr);
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qtest_memread(qts, addr + 4, &len, 4); /* Length of ACPI table */
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*aml_len = le32_to_cpu(len);
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*aml = g_malloc0(*aml_len);
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/* get whole table */
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qtest_memread(qts, addr, *aml, *aml_len);
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if (sig) {
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ACPI_ASSERT_CMP(**aml, sig);
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}
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if (verify_checksum) {
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g_assert(!acpi_calc_checksum(*aml, *aml_len));
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}
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}
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