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>
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@ -1 +1 @@
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Subproject commit 324ec3cb642a278d6d97ae809bc6098045bc6e65
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Subproject commit 45f0c04fd788fb29d9e303b2b2d1657ddb03448a
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@ -754,3 +754,37 @@ int acpigen_write_mainboard_resources(const char *scope, const char *name)
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acpigen_patch_len(len - 1);
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return len;
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}
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static int hex2bin(const char c)
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{
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if (c >= 'A' && c <= 'F')
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return c - 'A' + 10;
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if (c >= 'a' && c <= 'f')
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return c - 'a' + 10;
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return c - '0';
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}
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int acpigen_emit_eisaid(const char *eisaid)
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{
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u32 compact = 0;
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/* Clamping individual values would be better but
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there is a disagreement over what is a valid
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EISA id, so accept anything and don't clamp,
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parent code should create a valid EISAid.
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*/
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compact |= (eisaid[0] - 'A' + 1) << 26;
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compact |= (eisaid[1] - 'A' + 1) << 21;
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compact |= (eisaid[2] - 'A' + 1) << 16;
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compact |= hex2bin(eisaid[3]) << 12;
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compact |= hex2bin(eisaid[4]) << 8;
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compact |= hex2bin(eisaid[5]) << 4;
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compact |= hex2bin(eisaid[6]);
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acpigen_emit_byte(0xc);
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acpigen_emit_byte((compact >> 24) & 0xff);
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acpigen_emit_byte((compact >> 16) & 0xff);
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acpigen_emit_byte((compact >> 8) & 0xff);
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acpigen_emit_byte(compact & 0xff);
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return 5;
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}
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@ -34,6 +34,7 @@ int acpigen_write_byte(unsigned int data);
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int acpigen_emit_byte(unsigned char data);
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int acpigen_emit_stream(const char *data, int size);
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int acpigen_emit_namestring(const char *namepath);
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int acpigen_emit_eisaid(const char *eisaid);
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int acpigen_write_dword(unsigned int data);
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int acpigen_write_qword(uint64_t data);
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int acpigen_write_name(const char *name);
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