Differential D9165 Diff 23964 sys/boot/efi/loader/main.c

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sys/boot/efi/loader/main.c

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#ifdef EFI_ZFS_BOOT		#ifdef EFI_ZFS_BOOT
#include <libzfs.h>		#include <libzfs.h>
#endif		#endif

#include "loader_efi.h"		#include "loader_efi.h"

extern char bootprog_info[];		extern char bootprog_info[];

#ifdef BOOT_FORTH
/*
* Normally, efi.o from libefi.a would be brought in due to a function we call
* there that's defined there. However, none of its functions are callable from
* here since it just adds words to the FORTH environment or implement those
* words. So, add a reference to a symbol in efi.o to force it to be be brought
* in so the init function there gets added to the "compile" linker set happens
* correctly.
*
* This assumes there's no global analysys that notices dummy1 isn't used
* anywhere and tries to eliminate it.
*/
extern int efi_variable_support;
int *dummy1 = &efi_variable_support;
#endif

struct arch_switch archsw; /* MI/MD interface boundary */		struct arch_switch archsw; /* MI/MD interface boundary */

EFI_GUID acpi = ACPI_TABLE_GUID;		EFI_GUID acpi = ACPI_TABLE_GUID;
EFI_GUID acpi20 = ACPI_20_TABLE_GUID;		EFI_GUID acpi20 = ACPI_20_TABLE_GUID;
EFI_GUID devid = DEVICE_PATH_PROTOCOL;		EFI_GUID devid = DEVICE_PATH_PROTOCOL;
EFI_GUID imgid = LOADED_IMAGE_PROTOCOL;		EFI_GUID imgid = LOADED_IMAGE_PROTOCOL;
EFI_GUID mps = MPS_TABLE_GUID;		EFI_GUID mps = MPS_TABLE_GUID;
EFI_GUID netid = EFI_SIMPLE_NETWORK_PROTOCOL;		EFI_GUID netid = EFI_SIMPLE_NETWORK_PROTOCOL;
EFI_GUID smbios = SMBIOS_TABLE_GUID;		EFI_GUID smbios = SMBIOS_TABLE_GUID;
EFI_GUID dxe = DXE_SERVICES_TABLE_GUID;		EFI_GUID dxe = DXE_SERVICES_TABLE_GUID;
EFI_GUID hoblist = HOB_LIST_TABLE_GUID;		EFI_GUID hoblist = HOB_LIST_TABLE_GUID;
EFI_GUID memtype = MEMORY_TYPE_INFORMATION_TABLE_GUID;		EFI_GUID memtype = MEMORY_TYPE_INFORMATION_TABLE_GUID;
EFI_GUID debugimg = DEBUG_IMAGE_INFO_TABLE_GUID;		EFI_GUID debugimg = DEBUG_IMAGE_INFO_TABLE_GUID;
EFI_GUID fdtdtb = FDT_TABLE_GUID;		EFI_GUID fdtdtb = FDT_TABLE_GUID;
EFI_GUID inputid = SIMPLE_TEXT_INPUT_PROTOCOL;		EFI_GUID inputid = SIMPLE_TEXT_INPUT_PROTOCOL;

#ifdef EFI_ZFS_BOOT		#ifdef EFI_ZFS_BOOT
static void efi_zfs_probe(void);		static void efi_zfs_probe(void);
#endif		#endif

/*
* cpy8to16 copies a traditional C string into a CHAR16 string and
* 0 terminates it. len is the size of *dst in bytes.
*/
static void
cpy8to16(const char src, CHAR16 dst, size_t len)
{
len <<= 1; /* Assume CHAR16 is 2 bytes */
while (len > 0 && *src) {
dst++ = src++;
len--;
}
*dst++ = (CHAR16)0;
}

static void
cpy16to8(const CHAR16 src, char dst, size_t len)
{
size_t i;

for (i = 0; i < len && src[i]; i++)
dst[i] = (char)src[i];
if (i < len)
dst[i] = '\0';
}

static int		static int
has_keyboard(void)		has_keyboard(void)
{		{
EFI_STATUS status;		EFI_STATUS status;
EFI_DEVICE_PATH *path;		EFI_DEVICE_PATH *path;
EFI_HANDLE hin, hin_end, *walker;		EFI_HANDLE hin, hin_end, *walker;
UINTN sz;		UINTN sz;
int retval = 0;		int retval = 0;
▲ Show 20 Lines • Show All 326 Lines • ▼ Show 20 Lines	default: {
env_setenv("currdev", EV_VOLATILE, efi_fmtdev(&currdev),		env_setenv("currdev", EV_VOLATILE, efi_fmtdev(&currdev),
efi_setcurrdev, env_nounset);		efi_setcurrdev, env_nounset);
env_setenv("loaddev", EV_VOLATILE, efi_fmtdev(&currdev), env_noset,		env_setenv("loaddev", EV_VOLATILE, efi_fmtdev(&currdev), env_noset,
env_nounset);		env_nounset);
break;		break;
}		}
}		}

snprintf(var, sizeof(var), "%d.%02d", ST->Hdr.Revision >> 16,		efi_init_environment();
ST->Hdr.Revision & 0xffff);
env_setenv("efi-version", EV_VOLATILE, var, env_noset, env_nounset);
setenv("LINES", "24", 1); /* optional */		setenv("LINES", "24", 1); /* optional */

for (k = 0; k < ST->NumberOfTableEntries; k++) {		for (k = 0; k < ST->NumberOfTableEntries; k++) {
guid = &ST->ConfigurationTable[k].VendorGuid;		guid = &ST->ConfigurationTable[k].VendorGuid;
if (!memcmp(guid, &smbios, sizeof(EFI_GUID))) {		if (!memcmp(guid, &smbios, sizeof(EFI_GUID))) {
snprintf(buf, sizeof(buf), "%p",		snprintf(buf, sizeof(buf), "%p",
ST->ConfigurationTable[k].VendorTable);		ST->ConfigurationTable[k].VendorTable);
setenv("hint.smbios.0.mem", buf, 1);		setenv("hint.smbios.0.mem", buf, 1);
smbios_detect(ST->ConfigurationTable[k].VendorTable);		smbios_detect(ST->ConfigurationTable[k].VendorTable);
break;		break;
}		}
}		}

interact(NULL); /* doesn't return */		interact(NULL); /* doesn't return */

return (EFI_SUCCESS); /* keep compiler happy */		return (EFI_SUCCESS); /* keep compiler happy */
}		}

/* XXX move to lib stand ? */
static int
wcscmp(CHAR16 a, CHAR16 b)
{

while (a && b && a == b) {
a++;
b++;
}
return a - b;
}


COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);		COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);

static int		static int
command_reboot(int argc, char *argv[])		command_reboot(int argc, char *argv[])
{		{
int i;		int i;

for (i = 0; devsw[i] != NULL; ++i)		for (i = 0; devsw[i] != NULL; ++i)
▲ Show 20 Lines • Show All 264 Lines • ▼ Show 20 Lines	command_reloadbe(int argc, char *argv[])
if (err != 0) {		if (err != 0) {
command_errmsg = strerror(err);		command_errmsg = strerror(err);
return (CMD_ERROR);		return (CMD_ERROR);
}		}

return (CMD_OK);		return (CMD_OK);
}		}
#endif		#endif

COMMAND_SET(efishow, "efi-show", "print some or all EFI variables", command_efi_show);

static int
efi_print_var(CHAR16 varnamearg, EFI_GUID matchguid, int lflag)
{
UINTN datasz, i;
EFI_STATUS status;
UINT32 attr;
CHAR16 *data;
char *str;
uint32_t uuid_status;
int is_ascii;

datasz = 0;
status = RS->GetVariable(varnamearg, matchguid, &attr,
&datasz, NULL);
if (status != EFI_BUFFER_TOO_SMALL) {
printf("Can't get the variable: error %#lx\n", status);
return (CMD_ERROR);
}
data = malloc(datasz);
status = RS->GetVariable(varnamearg, matchguid, &attr,
&datasz, data);
if (status != EFI_SUCCESS) {
printf("Can't get the variable: error %#lx\n", status);
return (CMD_ERROR);
}
uuid_to_string((uuid_t *)matchguid, &str, &uuid_status);
if (lflag) {
printf("%s 0x%x %S", str, attr, varnamearg);
} else {
printf("%s 0x%x %S=", str, attr, varnamearg);
is_ascii = 1;
free(str);
str = (char *)data;
for (i = 0; i < datasz - 1; i++) {
/* Quick hack to see if this ascii-ish string printable range plus tab, cr and lf */
if ((str[i] < 32 \|\| str[i] > 126) && str[i] != 9 && str[i] != 10 && str[i] != 13) {
is_ascii = 0;
break;
}
}
if (str[datasz - 1] != '\0')
is_ascii = 0;
if (is_ascii)
printf("%s", str);
else {
for (i = 0; i < datasz / 2; i++) {
if (isalnum(data[i]) \|\| isspace(data[i]))
printf("%c", data[i]);
else
printf("\\x%02x", data[i]);
}
}
}
free(data);
if (pager_output("\n"))
return (CMD_WARN);
return (CMD_OK);
}

static int
command_efi_show(int argc, char *argv[])
{
/*
* efi-show [-a]
* print all the env
* efi-show -u UUID
* print all the env vars tagged with UUID
* efi-show -v var
* search all the env vars and print the ones matching var
* eif-show -u UUID -v var
* eif-show UUID var
* print all the env vars that match UUID and var
*/
/* NB: We assume EFI_GUID is the same as uuid_t */
int aflag = 0, gflag = 0, lflag = 0, vflag = 0;
int ch, rv;
unsigned i;
EFI_STATUS status;
EFI_GUID varguid = { 0,0,0,{0,0,0,0,0,0,0,0} };
EFI_GUID matchguid = { 0,0,0,{0,0,0,0,0,0,0,0} };
uint32_t uuid_status;
CHAR16 *varname;
CHAR16 *newnm;
CHAR16 varnamearg[128];
UINTN varalloc;
UINTN varsz;

while ((ch = getopt(argc, argv, "ag:lv:")) != -1) {
switch (ch) {
case 'a':
aflag = 1;
break;
case 'g':
gflag = 1;
uuid_from_string(optarg, (uuid_t *)&matchguid,
&uuid_status);
if (uuid_status != uuid_s_ok) {
printf("uid %s could not be parsed\n", optarg);
return (CMD_ERROR);
}
break;
case 'l':
lflag = 1;
break;
case 'v':
vflag = 1;
if (strlen(optarg) >= nitems(varnamearg)) {
printf("Variable %s is longer than %zd characters\n",
optarg, nitems(varnamearg));
return (CMD_ERROR);
}
for (i = 0; i < strlen(optarg); i++)
varnamearg[i] = optarg[i];
varnamearg[i] = 0;
break;
default:
printf("Invalid argument %c\n", ch);
return (CMD_ERROR);
}
}

if (aflag && (gflag \|\| vflag)) {
printf("-a isn't compatible with -v or -u\n");
return (CMD_ERROR);
}

if (aflag && optind < argc) {
printf("-a doesn't take any args");
return (CMD_ERROR);
}

if (optind == argc)
aflag = 1;

argc -= optind;
argv += optind;

pager_open();
if (vflag && gflag) {
rv = efi_print_var(varnamearg, &matchguid, lflag);
pager_close();
return (rv);
}

if (argc == 2) {
optarg = argv[0];
if (strlen(optarg) >= nitems(varnamearg)) {
printf("Variable %s is longer than %zd characters\n",
optarg, nitems(varnamearg));
pager_close();
return (CMD_ERROR);
}
for (i = 0; i < strlen(optarg); i++)
varnamearg[i] = optarg[i];
varnamearg[i] = 0;
optarg = argv[1];
uuid_from_string(optarg, (uuid_t *)&matchguid,
&uuid_status);
if (uuid_status != uuid_s_ok) {
printf("uid %s could not be parsed\n", optarg);
pager_close();
return (CMD_ERROR);
}
rv = efi_print_var(varnamearg, &matchguid, lflag);
pager_close();
return (rv);
}

if (argc > 0) {
printf("Too many args %d\n", argc);
pager_close();
return (CMD_ERROR);
}

/*
* Initiate the search -- note the standard takes pain
* to specify the initial call must be a poiner to a NULL
* character.
*/
varalloc = 1024;
varname = malloc(varalloc);
if (varname == NULL) {
printf("Can't allocate memory to get variables\n");
pager_close();
return (CMD_ERROR);
}
varname[0] = 0;
while (1) {
varsz = varalloc;
status = RS->GetNextVariableName(&varsz, varname, &varguid);
if (status == EFI_BUFFER_TOO_SMALL) {
varalloc = varsz;
newnm = malloc(varalloc);
if (newnm == NULL) {
printf("Can't allocate memory to get variables\n");
free(varname);
pager_close();
return (CMD_ERROR);
}
memcpy(newnm, varname, varsz);
free(varname);
varname = newnm;
continue; /* Try again with bigger buffer */
}
if (status != EFI_SUCCESS)
break;
if (aflag) {
if (efi_print_var(varname, &varguid, lflag) != CMD_OK)
break;
continue;
}
if (vflag) {
if (wcscmp(varnamearg, varname) == 0) {
if (efi_print_var(varname, &varguid, lflag) != CMD_OK)
break;
continue;
}
}
if (gflag) {
if (memcmp(&varguid, &matchguid, sizeof(varguid)) == 0) {
if (efi_print_var(varname, &varguid, lflag) != CMD_OK)
break;
continue;
}
}
}
free(varname);
pager_close();

return (CMD_OK);
}

COMMAND_SET(efiset, "efi-set", "set EFI variables", command_efi_set);

static int
command_efi_set(int argc, char *argv[])
{
char uuid, var, *val;
CHAR16 wvar[128];
EFI_GUID guid;
uint32_t status;
EFI_STATUS err;

if (argc != 4) {
printf("efi-set uuid var new-value\n");
return (CMD_ERROR);
}
uuid = argv[1];
var = argv[2];
val = argv[3];
uuid_from_string(uuid, (uuid_t *)&guid, &status);
if (status != uuid_s_ok) {
printf("Invalid uuid %s %d\n", uuid, status);
return (CMD_ERROR);
}
cpy8to16(var, wvar, sizeof(wvar));
err = RS->SetVariable(wvar, &guid,
EFI_VARIABLE_NON_VOLATILE \| EFI_VARIABLE_RUNTIME_ACCESS \| EFI_VARIABLE_BOOTSERVICE_ACCESS,
strlen(val) + 1, val);
if (EFI_ERROR(err)) {
printf("Failed to set variable: error %lu\n", EFI_ERROR_CODE(err));
return (CMD_ERROR);
}
return (CMD_OK);
}

COMMAND_SET(efiunset, "efi-unset", "delete / unset EFI variables", command_efi_unset);

static int
command_efi_unset(int argc, char *argv[])
{
char uuid, var;
CHAR16 wvar[128];
EFI_GUID guid;
uint32_t status;
EFI_STATUS err;

if (argc != 3) {
printf("efi-unset uuid var\n");
return (CMD_ERROR);
}
uuid = argv[1];
var = argv[2];
uuid_from_string(uuid, (uuid_t *)&guid, &status);
if (status != uuid_s_ok) {
printf("Invalid uuid %s\n", uuid);
return (CMD_ERROR);
}
cpy8to16(var, wvar, sizeof(wvar));
err = RS->SetVariable(wvar, &guid, 0, 0, NULL);
if (EFI_ERROR(err)) {
printf("Failed to unset variable: error %lu\n", EFI_ERROR_CODE(err));
return (CMD_ERROR);
}
return (CMD_OK);
}

#ifdef LOADER_FDT_SUPPORT		#ifdef LOADER_FDT_SUPPORT
extern int command_fdt_internal(int argc, char *argv[]);		extern int command_fdt_internal(int argc, char *argv[]);

/*		/*
* Since proper fdt command handling function is defined in fdt_loader_cmd.c,		* Since proper fdt command handling function is defined in fdt_loader_cmd.c,
* and declaring it as extern is in contradiction with COMMAND_SET() macro		* and declaring it as extern is in contradiction with COMMAND_SET() macro
* (which uses static pointer), we're defining wrapper function, which		* (which uses static pointer), we're defining wrapper function, which
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