summaryrefslogtreecommitdiffstats
path: root/qemu/roms/seabios/src/memmap.c
diff options
context:
space:
mode:
authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-05-18 13:18:31 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-05-18 13:42:15 +0300
commit437fd90c0250dee670290f9b714253671a990160 (patch)
treeb871786c360704244a07411c69fb58da9ead4a06 /qemu/roms/seabios/src/memmap.c
parent5bbd6fe9b8bab2a93e548c5a53b032d1939eec05 (diff)
These changes are the raw update to qemu-2.6.
Collission happened in the following patches: migration: do cleanup operation after completion(738df5b9) Bug fix.(1750c932f86) kvmclock: add a new function to update env->tsc.(b52baab2) The code provided by the patches was already in the upstreamed version. Change-Id: I3cc11841a6a76ae20887b2e245710199e1ea7f9a Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'qemu/roms/seabios/src/memmap.c')
-rw-r--r--qemu/roms/seabios/src/memmap.c144
1 files changed, 0 insertions, 144 deletions
diff --git a/qemu/roms/seabios/src/memmap.c b/qemu/roms/seabios/src/memmap.c
deleted file mode 100644
index e03f8d0bf..000000000
--- a/qemu/roms/seabios/src/memmap.c
+++ /dev/null
@@ -1,144 +0,0 @@
-// Support for building memory maps suitable for int 15 e820 calls.
-//
-// Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net>
-//
-// This file may be distributed under the terms of the GNU LGPLv3 license.
-
-#include "config.h" // BUILD_MAX_E820
-#include "memmap.h" // struct e820entry
-#include "output.h" // dprintf
-#include "string.h" // memmove
-
-
-/****************************************************************
- * e820 memory map
- ****************************************************************/
-
-// Info on e820 map location and size.
-struct e820entry e820_list[BUILD_MAX_E820] VARFSEG;
-int e820_count VARFSEG;
-
-// Remove an entry from the e820_list.
-static void
-remove_e820(int i)
-{
- e820_count--;
- memmove(&e820_list[i], &e820_list[i+1]
- , sizeof(e820_list[0]) * (e820_count - i));
-}
-
-// Insert an entry in the e820_list at the given position.
-static void
-insert_e820(int i, u64 start, u64 size, u32 type)
-{
- if (e820_count >= BUILD_MAX_E820) {
- warn_noalloc();
- return;
- }
-
- memmove(&e820_list[i+1], &e820_list[i]
- , sizeof(e820_list[0]) * (e820_count - i));
- e820_count++;
- struct e820entry *e = &e820_list[i];
- e->start = start;
- e->size = size;
- e->type = type;
-}
-
-static const char *
-e820_type_name(u32 type)
-{
- switch (type) {
- case E820_RAM: return "RAM";
- case E820_RESERVED: return "RESERVED";
- case E820_ACPI: return "ACPI";
- case E820_NVS: return "NVS";
- case E820_UNUSABLE: return "UNUSABLE";
- case E820_HOLE: return "HOLE";
- default: return "UNKNOWN";
- }
-}
-
-// Show the current e820_list.
-static void
-dump_map(void)
-{
- dprintf(1, "e820 map has %d items:\n", e820_count);
- int i;
- for (i=0; i<e820_count; i++) {
- struct e820entry *e = &e820_list[i];
- u64 e_end = e->start + e->size;
- dprintf(1, " %d: %016llx - %016llx = %d %s\n", i
- , e->start, e_end, e->type, e820_type_name(e->type));
- }
-}
-
-// Add a new entry to the list. This scans for overlaps and keeps the
-// list sorted.
-void
-add_e820(u64 start, u64 size, u32 type)
-{
- dprintf(8, "Add to e820 map: %08x %08x %d\n", (u32)start, (u32)size, type);
-
- if (! size)
- // Huh? Nothing to do.
- return;
-
- // Find position of new item (splitting existing item if needed).
- u64 end = start + size;
- int i;
- for (i=0; i<e820_count; i++) {
- struct e820entry *e = &e820_list[i];
- u64 e_end = e->start + e->size;
- if (start > e_end)
- continue;
- // Found position - check if an existing item needs to be split.
- if (start > e->start) {
- if (type == e->type) {
- // Same type - merge them.
- size += start - e->start;
- start = e->start;
- } else {
- // Split existing item.
- e->size = start - e->start;
- i++;
- if (e_end > end)
- insert_e820(i, end, e_end - end, e->type);
- }
- }
- break;
- }
- // Remove/adjust existing items that are overlapping.
- while (i<e820_count) {
- struct e820entry *e = &e820_list[i];
- if (end < e->start)
- // No overlap - done.
- break;
- u64 e_end = e->start + e->size;
- if (end >= e_end) {
- // Existing item completely overlapped - remove it.
- remove_e820(i);
- continue;
- }
- // Not completely overlapped - adjust its start.
- e->start = end;
- e->size = e_end - end;
- if (type == e->type) {
- // Same type - merge them.
- size += e->size;
- remove_e820(i);
- }
- break;
- }
- // Insert new item.
- if (type != E820_HOLE)
- insert_e820(i, start, size, type);
- //dump_map();
-}
-
-// Report on final memory locations.
-void
-memmap_prepboot(void)
-{
- dump_map();
-}