acpigen: Add acpigen_emit_eisaid.

Change-Id: Ib92142a133445018cd152dabe299792ba5f36548
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/5240
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
This commit is contained in:
Vladimir Serbinenko 2014-02-15 18:59:40 +01:00
parent 4b10bb7c80
commit 8ecdc9e877
3 changed files with 36 additions and 1 deletions

@ -1 +1 @@
Subproject commit 324ec3cb642a278d6d97ae809bc6098045bc6e65
Subproject commit 45f0c04fd788fb29d9e303b2b2d1657ddb03448a

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@ -754,3 +754,37 @@ int acpigen_write_mainboard_resources(const char *scope, const char *name)
acpigen_patch_len(len - 1);
return len;
}
static int hex2bin(const char c)
{
if (c >= 'A' && c <= 'F')
return c - 'A' + 10;
if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
return c - '0';
}
int acpigen_emit_eisaid(const char *eisaid)
{
u32 compact = 0;
/* Clamping individual values would be better but
there is a disagreement over what is a valid
EISA id, so accept anything and don't clamp,
parent code should create a valid EISAid.
*/
compact |= (eisaid[0] - 'A' + 1) << 26;
compact |= (eisaid[1] - 'A' + 1) << 21;
compact |= (eisaid[2] - 'A' + 1) << 16;
compact |= hex2bin(eisaid[3]) << 12;
compact |= hex2bin(eisaid[4]) << 8;
compact |= hex2bin(eisaid[5]) << 4;
compact |= hex2bin(eisaid[6]);
acpigen_emit_byte(0xc);
acpigen_emit_byte((compact >> 24) & 0xff);
acpigen_emit_byte((compact >> 16) & 0xff);
acpigen_emit_byte((compact >> 8) & 0xff);
acpigen_emit_byte(compact & 0xff);
return 5;
}

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@ -34,6 +34,7 @@ int acpigen_write_byte(unsigned int data);
int acpigen_emit_byte(unsigned char data);
int acpigen_emit_stream(const char *data, int size);
int acpigen_emit_namestring(const char *namepath);
int acpigen_emit_eisaid(const char *eisaid);
int acpigen_write_dword(unsigned int data);
int acpigen_write_qword(uint64_t data);
int acpigen_write_name(const char *name);