| /* ----------------------------------------------------------------------- * |
| * |
| * Copyright 2009-2011 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 <stdlib.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 *q; |
| |
| /* Let's start for the base address */ |
| for (q = (uint8_t *)RSDP_MIN_ADDRESS; q < (uint8_t *)RSDP_MAX_ADDRESS; q+=16 ) { |
| /* Searching for RSDP with "RSD PTR" signature */ |
| if (memcmp(q, RSDP, sizeof(RSDP)-1) == 0) { |
| s_rsdp *r = &acpi->rsdp; |
| r->valid = true; |
| r->address = 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 */ |
| acpi->rsdt.address = r->rsdt_address; |
| acpi->xsdt.address = r->xsdt_address; |
| DEBUG_PRINT(("RSDT should be at %p\n",r->rsdt_address)); |
| DEBUG_PRINT(("XSDT should be at %p\n",r->xsdt_address)); |
| 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%p\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 : %p\n", r->rsdt_address); |
| printf(" length : %u\n", r->length); |
| printf(" XSDT address : %p\n", r->xsdt_address); |
| printf(" extended checksum : %u\n", r->extended_checksum); |
| } |