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MFC: Add constants for the different memory types in the SMAP table and

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use the SMAP types and constants from <machine/pc/bios.h> in the boot code.
This commit is contained in:
jhb 2008-03-21 15:34:39 +00:00
parent d3daa7de75
commit 303513927d
6 changed files with 36 additions and 37 deletions
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2
sys/amd64/amd64/machdep.c
View File

@ -929,7 +929,7 @@ getmemsize(caddr_t kmdp, u_int64_t first)
printf("SMAP type=%02x base=%016lx len=%016lx\n",
smap->type, smap->base, smap->length);
if (smap->type != 0x01)
if (smap->type != SMAP_TYPE_MEMORY)
continue;
if (smap->length == 0)

10
sys/amd64/include/pc/bios.h
View File

@ -38,10 +38,16 @@ extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen,
/*
* Int 15:E820 'SMAP' structure
*
* XXX add constants for type
*/
#define SMAP_SIG 0x534D4150 /* 'SMAP' */
#define SMAP_TYPE_MEMORY 1
#define SMAP_TYPE_RESERVED 2
#define SMAP_TYPE_ACPI_RECLAIM 3
#define SMAP_TYPE_ACPI_NVS 4
#define SMAP_TYPE_ACPI_ERROR 5
struct bios_smap {
u_int64_t base;
u_int64_t length;

22
sys/boot/i386/libi386/biosmem.c
View File

@ -31,21 +31,14 @@ __FBSDID("$FreeBSD$");
* Obtain memory configuration information from the BIOS
*/
#include <stand.h>
#include <machine/pc/bios.h>
#include "libi386.h"
#include "btxv86.h"
vm_offset_t memtop, memtop_copyin;
u_int32_t bios_basemem, bios_extmem;
#define SMAPSIG 0x534D4150
struct smap {
u_int64_t base;
u_int64_t length;
u_int32_t type;
} __packed;
static struct smap smap;
static struct bios_smap smap;
void
bios_getmem(void)
@ -57,18 +50,19 @@ bios_getmem(void)
v86.ctl = V86_FLAGS;
v86.addr = 0x15; /* int 0x15 function 0xe820*/
v86.eax = 0xe820;
v86.ecx = sizeof(struct smap);
v86.edx = SMAPSIG;
v86.ecx = sizeof(struct bios_smap);
v86.edx = SMAP_SIG;
v86.es = VTOPSEG(&smap);
v86.edi = VTOPOFF(&smap);
v86int();
if ((v86.efl & 1) || (v86.eax != SMAPSIG))
if ((v86.efl & 1) || (v86.eax != SMAP_SIG))
break;
/* look for a low-memory segment that's large enough */
if ((smap.type == 1) && (smap.base == 0) && (smap.length >= (512 * 1024)))
if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base == 0) &&
(smap.length >= (512 * 1024)))
bios_basemem = smap.length;
/* look for the first segment in 'extended' memory */
if ((smap.type == 1) && (smap.base == 0x100000)) {
if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base == 0x100000)) {
bios_extmem = smap.length;
}
} while (v86.ebx != 0);

27
sys/boot/i386/libi386/biossmap.c
View File

@ -34,21 +34,14 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/linker.h>
#include <machine/metadata.h>
#include <machine/pc/bios.h>
#include "bootstrap.h"
#include "libi386.h"
#include "btxv86.h"
#define SMAPSIG 0x534D4150
static struct bios_smap smap;
struct smap {
u_int64_t base;
u_int64_t length;
u_int32_t type;
} __packed;
static struct smap smap;
static struct smap *smapbase;
static struct bios_smap *smapbase;
static int smaplen;
void
@ -64,12 +57,12 @@ bios_getsmap(void)
v86.ctl = V86_FLAGS;
v86.addr = 0x15; /* int 0x15 function 0xe820*/
v86.eax = 0xe820;
v86.ecx = sizeof(struct smap);
v86.edx = SMAPSIG;
v86.ecx = sizeof(struct bios_smap);
v86.edx = SMAP_SIG;
v86.es = VTOPSEG(&smap);
v86.edi = VTOPOFF(&smap);
v86int();
if ((v86.efl & 1) || (v86.eax != SMAPSIG))
if ((v86.efl & 1) || (v86.eax != SMAP_SIG))
break;
n++;
} while (v86.ebx != 0);
@ -84,14 +77,14 @@ bios_getsmap(void)
v86.ctl = V86_FLAGS;
v86.addr = 0x15; /* int 0x15 function 0xe820*/
v86.eax = 0xe820;
v86.ecx = sizeof(struct smap);
v86.edx = SMAPSIG;
v86.ecx = sizeof(struct bios_smap);
v86.edx = SMAP_SIG;
v86.es = VTOPSEG(&smap);
v86.edi = VTOPOFF(&smap);
v86int();
bcopy(&smap, &smapbase[smaplen], sizeof(struct smap));
bcopy(&smap, &smapbase[smaplen], sizeof(struct bios_smap));
smaplen++;
if ((v86.efl & 1) || (v86.eax != SMAPSIG))
if ((v86.efl & 1) || (v86.eax != SMAP_SIG))
break;
} while (v86.ebx != 0 && smaplen < n);
}

2
sys/i386/i386/machdep.c
View File

@ -1770,7 +1770,7 @@ getmemsize(int first)
smap->type, smap->base, smap->length);
has_smap = 1;
if (smap->type != 0x01)
if (smap->type != SMAP_TYPE_MEMORY)
continue;
if (smap->length == 0)

10
sys/i386/include/pc/bios.h
View File

@ -271,10 +271,16 @@ struct PIR_table
/*
* Int 15:E820 'SMAP' structure
*
* XXX add constants for type
*/
#define SMAP_SIG 0x534D4150 /* 'SMAP' */
#define SMAP_TYPE_MEMORY 1
#define SMAP_TYPE_RESERVED 2
#define SMAP_TYPE_ACPI_RECLAIM 3
#define SMAP_TYPE_ACPI_NVS 4
#define SMAP_TYPE_ACPI_ERROR 5
struct bios_smap {
u_int64_t base;
u_int64_t length;