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[settings] Use memmap_describe() to construct memory map settings

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2025-05-16 15:47:51 +01:00
parent c8d64ecd87
commit 79c30b92a3
1 changed files with 29 additions and 25 deletions
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54
src/core/memmap_settings.c
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@@ -28,7 +28,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <byteswap.h>
#include <ipxe/init.h>
#include <ipxe/settings.h>
#include <ipxe/io.h>
#include <ipxe/memmap.h>
/** @file
*
@@ -139,16 +139,15 @@ static int memmap_settings_applies ( struct settings *settings __unused,
static int memmap_settings_fetch ( struct settings *settings,
struct setting *setting,
void *data, size_t len ) {
struct memory_map memmap;
struct memory_region *region;
struct memmap_region region;
uint64_t result = 0;
unsigned int index = 0;
unsigned int start;
unsigned int count;
unsigned int scale;
int include_start;
int include_length;
int ignore_nonexistent;
unsigned int i;
/* Parse settings tag */
start = MEMMAP_START ( setting->tag );
@@ -163,35 +162,40 @@ static int memmap_settings_fetch ( struct settings *settings,
( include_length ? "length" : "" ),
( ignore_nonexistent ? " ignore" : "" ), scale );
/* Fetch memory map */
get_memmap ( &memmap );
/* Extract results from memory map */
for ( i = start ; count-- ; i++ ) {
for_each_memmap ( &region, 0 ) {
/* Check that region exists */
if ( i >= memmap.count ) {
if ( ignore_nonexistent ) {
continue;
} else {
DBGC ( settings, "MEMMAP region %d does not "
"exist\n", i );
return -ENOENT;
}
}
/* Skip non-memory regions */
if ( ! ( region.flags & MEMMAP_FL_MEMORY ) )
continue;
/* Ignore unwanted regions */
if ( index++ < start )
continue;
/* Extract results from this region */
region = &memmap.regions[i];
if ( include_start ) {
result += region->start;
DBGC ( settings, "MEMMAP %d start %08llx\n",
i, region->start );
result += region.addr;
DBGC ( settings, "MEMMAP %d start %#08llx\n", index,
( ( unsigned long long ) region.addr ) );
}
if ( include_length ) {
result += ( region->end - region->start );
DBGC ( settings, "MEMMAP %d length %08llx\n",
i, ( region->end - region->start ) );
result += memmap_size ( &region );
DBGC ( settings, "MEMMAP %d length %#08llx\n", index,
( ( unsigned long long )
memmap_size ( &region ) ) );
}
/* Stop when we have accumulated sufficient regions */
if ( --count == 0 )
break;
}
/* Check for nonexistent regions */
if ( count && ( ! ignore_nonexistent ) ) {
DBGC ( settings, "MEMMAP regions %d-%d do not exist\n",
index, ( index + count - 1 ) );
return -ENOENT;
}
/* Scale result */