Kevin,
Notice that your patch changes SystemBiosDate for legacy smbios users from
04/01/14 to 01/01/11 - I’m okay with this change.
Also notice that the RELEASE_DATE_STR[] in smbios.c has to be volatile or else
it is optimized,
unlike BIOS_DATE[] which is used in a function call and is not optimized.
So the patch should be:
diff --git a/src/fw/biostables.c b/src/fw/biostables.c
index fe8626ef..718926d7 100644
--- a/src/fw/biostables.c
+++ b/src/fw/biostables.c
@@ -401,7 +401,7 @@ smbios_new_type_0(void *start,
}
#define BIOS_NAME "SeaBIOS"
-#define BIOS_DATE "04/01/2014"
+static const char BIOS_DATE[] = "04/01/2014";
static int
smbios_romfile_setup(void)
diff --git a/src/fw/smbios.c b/src/fw/smbios.c
index f3b5ad9d..fc4dcfe2 100644
--- a/src/fw/smbios.c
+++ b/src/fw/smbios.c
@@ -134,7 +141,7 @@ get_external(int type, char **p, unsigned *nr_structs,
end += size; \
p->field = ++str_index; \
} else { \
- memcpy(end, def, sizeof(def)); \
+ memcpy(end, (void*)def, sizeof(def)); \
end += sizeof(def); \
p->field = ++str_index; \
} \
@@ -161,7 +168,7 @@ get_external(int type, char **p, unsigned *nr_structs,
} while (0)
/* Type 0 -- BIOS Information */
-#define RELEASE_DATE_STR "01/01/2011"
+const char volatile RELEASE_DATE_STR[] = "01/01/2011";
static void *
smbios_init_type_0(void *start)
{
—
Sam
> On 24 May 2019, at 7:52, Gerd Hoffmann <[email protected]> wrote:
>
> Hi,
>
>> * Letting the user choose the date which will appear in the
>> SystemBiosDate registry key
>> Under QEMU.
>
> Ah, *this* is why qemu provides a type0 table.
> What is the use case for this?
The thing is that SystemBiosDate is different than the value in smbios0.date,
at least on a legacy bios.
>
>> Legacy SMBIOS Bios Date is '01/01/2011’
>
> Maybe it's time add a config option to compile out support for legacy
> acpi / smbios tables. The qemu versions which need that are a few years
> old meanwhile …
I don’t know who uses legacy smbios at the moment except for qemu machines <
2.1 but adding a config option is always nice.
Actually I think we used legacy smbios in v2v scenarios from VMware/PhoenixBios
to QEMU/SeaBIOS (with hwversion < 12).
>
> cheers,
> Gerd
>
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