From 4904802efc8eee37f95163f60823509e2a208af4 Mon Sep 17 00:00:00 2001 From: Aaron Durbin Date: Tue, 18 Feb 2014 21:55:02 -0600 Subject: coreboot: introduce notion of bootmem for memory map at boot The write_coreboot_table() in coreboot_table.c was already using struct memrange for managing and building up the entries that eventually go into the lb_memory table. Abstract that concept out to a bootmem memory map. The bootmem concept can then be used as a basis for loading payloads, for example. Change-Id: I7edbbca6bbd0568f658fde39ca93b126cab88367 Signed-off-by: Aaron Durbin Reviewed-on: http://review.coreboot.org/5302 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan Reviewed-by: Alexandru Gagniuc --- src/include/boot/coreboot_tables.h | 3 --- src/include/bootmem.h | 48 ++++++++++++++++++++++++++++++++++++++ src/include/cbmem.h | 5 ++-- 3 files changed, 50 insertions(+), 6 deletions(-) create mode 100644 src/include/bootmem.h (limited to 'src/include') diff --git a/src/include/boot/coreboot_tables.h b/src/include/boot/coreboot_tables.h index 6243d4589c..9b87f3d190 100644 --- a/src/include/boot/coreboot_tables.h +++ b/src/include/boot/coreboot_tables.h @@ -338,9 +338,6 @@ unsigned long write_coreboot_table( unsigned long low_table_start, unsigned long low_table_end, unsigned long rom_table_start, unsigned long rom_table_end); -void lb_add_memory_range(struct lb_memory *mem, - uint32_t type, uint64_t start, uint64_t size); - /* Routines to extract part so the coreboot table or information * from the coreboot table. */ diff --git a/src/include/bootmem.h b/src/include/bootmem.h new file mode 100644 index 0000000000..656769f8db --- /dev/null +++ b/src/include/bootmem.h @@ -0,0 +1,48 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef BOOTMEM_H +#define BOOTMEM_H + +#include +#include +#include + +/* + * Initialize the memory address space prior to payload loading. The bootmem + * serves as the source for the lb_mem table. + */ +void bootmem_init(void); + +/* Add a range of a given type to the bootmem address space. */ +void bootmem_add_range(uint64_t start, uint64_t size, uint32_t type); + +/* Write memory coreboot table. */ +void bootmem_write_memory_table(struct lb_memory *mem); + +/* Print current range map of boot memory. */ +void bootmem_dump_ranges(void); + +/* Return 1 if region targets usable RAM, 0 otherwise. */ +int bootmem_region_targets_usable_ram(uint64_t start, uint64_t size); + +/* Allocate a temporary buffer from the unused RAM areas. */ +void *bootmem_allocate_buffer(size_t size); + +#endif /* BOOTMEM_H */ diff --git a/src/include/cbmem.h b/src/include/cbmem.h index eb307d49bb..7cb12b261f 100644 --- a/src/include/cbmem.h +++ b/src/include/cbmem.h @@ -174,9 +174,8 @@ void *cbmem_find(u32 id); #ifndef __PRE_RAM__ /* Ramstage only functions. */ -/* Add the cbmem memory used to the memory tables. */ -struct lb_memory; -void cbmem_add_lb_mem(struct lb_memory *mem); +/* Add the cbmem memory used to the memory map at boot. */ +void cbmem_add_bootmem(void); void cbmem_list(void); void cbmem_arch_init(void); void cbmem_print_entry(int n, u32 id, u64 start, u64 size); -- cgit v1.2.3