[syslinux:master] ACPI: Adding HPET support

[syslinux-bot for Erwan Velu]

Commit-ID:  7c9a76021519d03f2c6816692b25985509192ddf
Gitweb:     http://syslinux.zytor.com/commit/7c9a76021519d03f2c6816692b25985509192ddf
Author:     Erwan Velu <erwanaliasr1 at gmail.com>
AuthorDate: Mon, 31 Jan 2011 21:24:07 +0100
Committer:  Erwan Velu <erwanaliasr1 at gmail.com>
CommitDate: Mon, 31 Jan 2011 21:24:07 +0100

ACPI: Adding HPET support



---
 com32/gplinclude/acpi/acpi.h             |    2 ++
 com32/gplinclude/acpi/{ssdt.h => hpet.h} |   13 +++++++------
 com32/gpllib/acpi/acpi.c                 |    8 ++++++++
 3 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/com32/gplinclude/acpi/acpi.h b/com32/gplinclude/acpi/acpi.h
index 1d9a5a0..490fbca 100644
--- a/com32/gplinclude/acpi/acpi.h
+++ b/com32/gplinclude/acpi/acpi.h
@@ -31,6 +31,7 @@ void dbg_printf(const char *fmt, ...);
 #include <acpi/sbst.h>
 #include <acpi/ecdt.h>
 #include <acpi/facs.h>
+#include <acpi/hpet.h>
 
 enum { ACPI_FOUND = 1, ENO_ACPI = 2 , MADT_FOUND = 3 , ENO_MADT = 4 };
 
@@ -76,6 +77,7 @@ typedef struct {
     s_sbst sbst;
     s_ecdt ecdt;
     s_facs facs;
+    s_hpet hpet;
 } s_acpi;
 
 int parse_acpi(s_acpi * acpi);
diff --git a/com32/gplinclude/acpi/ssdt.h b/com32/gplinclude/acpi/hpet.h
similarity index 86%
copy from com32/gplinclude/acpi/ssdt.h
copy to com32/gplinclude/acpi/hpet.h
index af74dce..99dea6a 100644
--- a/com32/gplinclude/acpi/ssdt.h
+++ b/com32/gplinclude/acpi/hpet.h
@@ -10,19 +10,20 @@
  *
  * ----------------------------------------------------------------------- */
 
-#ifndef SSDT_H
-#define SSDT_H
+#ifndef HPET_H
+#define HPET_H
 #include <inttypes.h>
 #include <stdbool.h>
 
-#define SSDT "SSDT"
-#define PSDT "PSDT"
+#define HPET "HPET"
+
+enum { HPET_TABLE_FOUND = 1 };
 
 typedef struct {
     uint64_t *address;
     s_acpi_description_header header;
-    uint8_t *definition_block;
+    /* What's inside ? */
     bool valid;
-} s_ssdt;
+} s_hpet;
 
 #endif
diff --git a/com32/gpllib/acpi/acpi.c b/com32/gpllib/acpi/acpi.c
index b763e0b..68af84a 100644
--- a/com32/gpllib/acpi/acpi.c
+++ b/com32/gpllib/acpi/acpi.c
@@ -200,6 +200,14 @@ bool parse_header(uint64_t *address, s_acpi *acpi) {
 		e->address = address;
 		memcpy(&e->header, &adh, sizeof(adh));
 		parse_ecdt(e);
+	    }  else if (memcmp(adh.signature, HPET, sizeof(HPET) - 1) == 0) {
+		DEBUG_PRINT(("HPET table found\n"));
+		s_hpet *h = &acpi->hpet;
+		/* This structure is valid, let's fill it */
+		h->valid = true;
+		h->address = address;
+		memcpy(&h->header, &adh, sizeof(adh));
 	    }
+
 	    return true;
 }