nvbios: parse D unk2 table

envytools · Nov 20, 2016 · 0728a16 · 0728a16
1 parent 7f21141
commit 0728a16
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Showing 3 changed files with 61 additions and 0 deletions.
diff --git a/nvbios/D.c b/nvbios/D.c
@@ -24,6 +24,8 @@
 
 #include "bios.h"
 
+static void envy_bios_parse_D_unk2(struct envy_bios *);
+
 struct D_known_tables {
 	uint8_t offset;
 	uint16_t *ptr;
@@ -66,6 +68,7 @@ envy_bios_parse_bit_D(struct envy_bios *bios, struct envy_bios_bit_entry *bit)
 		idx++;
 
 	/* parse tables */
+	envy_bios_parse_D_unk2(bios);
 
 	return 0;
 }
@@ -94,3 +97,58 @@ envy_bios_print_bit_D(struct envy_bios *bios, FILE *out, unsigned mask)
 
 	fprintf(out, "\n");
 }
+
+static void
+envy_bios_parse_D_unk2(struct envy_bios *bios)
+{
+	struct envy_bios_D_unk2 *unk2 = &bios->D.unk2;
+	int err = 0, i;
+
+	if (!unk2->offset)
+		return;
+
+	bios_u8(bios, unk2->offset, &unk2->version);
+	switch (unk2->version) {
+	case 0x20:
+		err |= bios_u8(bios, unk2->offset + 0x1, &unk2->hlen);
+		err |= bios_u8(bios, unk2->offset + 0x2, &unk2->rlen);
+		err |= bios_u8(bios, unk2->offset + 0x3, &unk2->entriesnum);
+		unk2->valid = !err;
+		break;
+	default:
+		ENVY_BIOS_ERR("Unknown UNK2 table version 0x%x\n", unk2->version);
+		return;
+	}
+
+	unk2->entries = malloc(unk2->entriesnum * sizeof(struct envy_bios_D_unk2_entry));
+	for (i = 0; i < unk2->entriesnum; ++i) {
+		struct envy_bios_D_unk2_entry *e = &unk2->entries[i];
+		e->offset = unk2->offset + unk2->hlen + i * unk2->rlen;
+	}
+}
+
+void
+envy_bios_print_D_unk2(struct envy_bios *bios, FILE *out, unsigned mask)
+{
+	struct envy_bios_D_unk2 *unk2 = &bios->D.unk2;
+	int i;
+
+	if (!unk2->offset || !(mask & ENVY_BIOS_PRINT_D))
+		return;
+	if (!unk2->valid) {
+		ENVY_BIOS_ERR("Failed to parse D UNK2 table at 0x%x, version %x\n\n", unk2->offset, unk2->version);
+		return;
+	}
+
+	fprintf(out, "D UNK2 table at 0x%x, version %x\n", unk2->offset, unk2->version);
+	envy_bios_dump_hex(bios, out, unk2->offset, unk2->hlen, mask);
+	if (mask & ENVY_BIOS_PRINT_VERBOSE) fprintf(out, "\n");
+
+	for (i = 0; i < unk2->entriesnum; ++i) {
+		struct envy_bios_D_unk2_entry *e = &unk2->entries[i];
+		envy_bios_dump_hex(bios, out, e->offset, unk2->rlen, mask);
+		if (mask & ENVY_BIOS_PRINT_VERBOSE) fprintf(out, "\n");
+	}
+
+	fprintf(out, "\n");
+}
diff --git a/nvbios/bios.h b/nvbios/bios.h
@@ -1621,6 +1621,7 @@ void envy_bios_print_mem_unk0d(struct envy_bios *bios, FILE *out, unsigned mask)
 
 int envy_bios_parse_bit_D (struct envy_bios *, struct envy_bios_bit_entry *);
 void envy_bios_print_bit_D (struct envy_bios *, FILE *out, unsigned mask);
+void envy_bios_print_D_unk2(struct envy_bios *, FILE *out, unsigned mask);
 
 int envy_bios_parse_dcb (struct envy_bios *bios);
 void envy_bios_print_dcb (struct envy_bios *bios, FILE *out, unsigned mask);

diff --git a/nvbios/print.c b/nvbios/print.c
@@ -453,6 +453,8 @@ void envy_bios_print (struct envy_bios *bios, FILE *out, unsigned mask) {
 		envy_bios_print_power_unk90(bios, stdout, mask);
 		envy_bios_print_power_unk94(bios, stdout, mask);
 		envy_bios_print_power_unk98(bios, stdout, mask);
+
+		envy_bios_print_D_unk2(bios, stdout, mask);
 		break;
 	}
 	if (mask & ENVY_BIOS_PRINT_BLOCKS) {