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-rw-r--r--com32/gpllib/acpi/rsdp.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/com32/gpllib/acpi/rsdp.c b/com32/gpllib/acpi/rsdp.c
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+++ b/com32/gpllib/acpi/rsdp.c
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+/* ----------------------------------------------------------------------- *
+ *
+ * Copyright 2009 Erwan Velu - All Rights Reserved
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall
+ * be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * -----------------------------------------------------------------------
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include <memory.h>
+#include <dprintf.h>
+#include "acpi/acpi.h"
+
+int search_rsdp(s_acpi * acpi)
+{
+ /* Let's seach for RSDT table */
+ uint8_t *p, *q;
+
+ /* Let's start for the base address */
+ p = (uint64_t *) RSDP_MIN_ADDRESS;
+ for (q = p; q < RSDP_MAX_ADDRESS; q += 16) {
+ /* Searching for MADT with APIC signature */
+ if (memcmp(q, "RSD PTR", 7) == 0) {
+ s_rsdp *r = &acpi->rsdp;
+ r->valid = true;
+ r->address = (uint64_t) q;
+ cp_str_struct(r->signature);
+ cp_struct(&r->checksum);
+ cp_str_struct(r->oem_id);
+ cp_struct(&r->revision);
+ cp_struct(&r->rsdt_address);
+ cp_struct(&r->length);
+ cp_struct(&r->xsdt_address);
+ cp_struct(&r->extended_checksum);
+ q += 3; /* reserved field */
+ return RSDP_TABLE_FOUND;
+ }
+ }
+ return -RSDP_TABLE_FOUND;
+}
+
+void print_rsdp(s_acpi * acpi)
+{
+ s_rsdp *r = &acpi->rsdp;
+
+ if (!r->valid)
+ return;
+ printf("RSDP Table @ 0x%016llx\n", r->address);
+ printf(" signature : %s\n", r->signature);
+ printf(" checksum : %u\n", r->checksum);
+ printf(" oem id : %s\n", r->oem_id);
+ printf(" revision : %u\n", r->revision);
+ printf(" RDST address : 0x%08x\n", r->rsdt_address);
+ printf(" length : %u\n", r->length);
+ printf(" XSDT address : 0x%08x\n", r->xsdt_address);
+ printf(" extended checksum : %u\n", r->extended_checksum);
+}