drivers/aspeed/common: Add support for high resolution framebuffer

* Implement reading EDID over software I2C.
* Fall back to VGA if no monitor connected for BMC KVM
* Copy the linux kernel code and add a bunch of wrapper structs to make it
  compile.
* Convert the EDID to a drm_display_mode, which is understood by the
  driver.
* Properly select HAVE_LINEAR_FRAMEBUFFER and HAVE_VGA_TEXT_FRAMEBUFFER

Tested on Supermicro X11SSH-TF using FullHD VGA monitor.
Initializes the graphics in about 1 second, which is twice as fast as the
VGA Option ROM.

The framebuffer is advertised and working in tianocore.

Change-Id: I7803566b64158405efc04a39f80a0ec98b44e646
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35726
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 115 insertions, 76 deletions

diff --git a/src/drivers/aspeed/common/ast_tables.h b/src/drivers/aspeed/common/ast_tables.h
index ae3c6d078a..27b01725b5 100644
--- a/src/drivers/aspeed/common/ast_tables.h
+++ b/src/drivers/aspeed/common/ast_tables.h
@@ -49,6 +49,7 @@
 #define SyncPN			(PVSync | NHSync)
 #define SyncNP			(NVSync | PHSync)
 #define SyncNN			(NVSync | NHSync)
+#define AST2500PreCatchCRT	0x00004000
 
 /* DCLK Index */
 #define VCLK25_175		0x00
@@ -110,80 +111,110 @@ static struct ast_vbios_dclk_info dclk_table[] = {
 	{0x3b, 0x2c, 0x81},		/* 1A: VCLK118_25 */
 };
 
+static const struct ast_vbios_dclk_info dclk_table_ast2500[] = {
+	{0x2C, 0xE7, 0x03},			/* 00: VCLK25_175	*/
+	{0x95, 0x62, 0x03},			/* 01: VCLK28_322	*/
+	{0x67, 0x63, 0x01},			/* 02: VCLK31_5		*/
+	{0x76, 0x63, 0x01},			/* 03: VCLK36		*/
+	{0xEE, 0x67, 0x01},			/* 04: VCLK40		*/
+	{0x82, 0x62, 0x01},			/* 05: VCLK49_5		*/
+	{0xC6, 0x64, 0x01},			/* 06: VCLK50		*/
+	{0x94, 0x62, 0x01},			/* 07: VCLK56_25	*/
+	{0x80, 0x64, 0x00},			/* 08: VCLK65		*/
+	{0x7B, 0x63, 0x00},			/* 09: VCLK75		*/
+	{0x67, 0x62, 0x00},			/* 0A: VCLK78_75	*/
+	{0x7C, 0x62, 0x00},			/* 0B: VCLK94_5		*/
+	{0x8E, 0x62, 0x00},			/* 0C: VCLK108		*/
+	{0x85, 0x24, 0x00},			/* 0D: VCLK135		*/
+	{0x67, 0x22, 0x00},			/* 0E: VCLK157_5	*/
+	{0x6A, 0x22, 0x00},			/* 0F: VCLK162		*/
+	{0x4d, 0x4c, 0x80},			/* 10: VCLK154		*/
+	{0x68, 0x6f, 0x80},			/* 11: VCLK83.5		*/
+	{0x28, 0x49, 0x80},			/* 12: VCLK106.5	*/
+	{0x37, 0x49, 0x80},			/* 13: VCLK146.25	*/
+	{0x1f, 0x45, 0x80},			/* 14: VCLK148.5	*/
+	{0x47, 0x6c, 0x80},			/* 15: VCLK71		*/
+	{0x25, 0x65, 0x80},			/* 16: VCLK88.75	*/
+	{0x58, 0x01, 0x42},			/* 17: VCLK119		*/
+	{0x32, 0x67, 0x80},			/* 18: VCLK85_5		*/
+	{0x6a, 0x6d, 0x80},			/* 19: VCLK97_75	*/
+	{0x44, 0x20, 0x43},			/* 1A: VCLK118_25	*/
+};
+
 static struct ast_vbios_stdtable vbios_stdtable[] = {
 	/* MD_2_3_400 */
 	{
 		0x67,
-		{0x00,0x03,0x00,0x02},
-		{0x5f,0x4f,0x50,0x82,0x55,0x81,0xbf,0x1f,
-		 0x00,0x4f,0x0d,0x0e,0x00,0x00,0x00,0x00,
-		 0x9c,0x8e,0x8f,0x28,0x1f,0x96,0xb9,0xa3,
-		 0xff},
-		{0x00,0x01,0x02,0x03,0x04,0x05,0x14,0x07,
-		 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,
-		 0x0c,0x00,0x0f,0x08},
-		{0x00,0x00,0x00,0x00,0x00,0x10,0x0e,0x00,
-		 0xff}
+		{0x00, 0x03, 0x00, 0x02},
+		{0x5f, 0x4f, 0x50, 0x82, 0x55, 0x81, 0xbf, 0x1f,
+		0x00, 0x4f, 0x0d, 0x0e, 0x00, 0x00, 0x00, 0x00,
+		0x9c, 0x8e, 0x8f, 0x28, 0x1f, 0x96, 0xb9, 0xa3,
+		0xff},
+		{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x14, 0x07,
+		0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
+		0x0c, 0x00, 0x0f, 0x08},
+		{0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x0e, 0x00,
+		0xff}
 	},
 	/* Mode12/ExtEGATable */
 	{
 		0xe3,
-		{0x01,0x0f,0x00,0x06},
-		{0x5f,0x4f,0x50,0x82,0x55,0x81,0x0b,0x3e,
-		 0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,
-		 0xe9,0x8b,0xdf,0x28,0x00,0xe7,0x04,0xe3,
-		 0xff},
-		{0x00,0x01,0x02,0x03,0x04,0x05,0x14,0x07,
-		 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,
-		 0x01,0x00,0x0f,0x00},
-		{0x00,0x00,0x00,0x00,0x00,0x00,0x05,0x0f,
-		 0xff}
+		{0x01, 0x0f, 0x00, 0x06},
+		{0x5f, 0x4f, 0x50, 0x82, 0x55, 0x81, 0x0b, 0x3e,
+		0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0xe9, 0x8b, 0xdf, 0x28, 0x00, 0xe7, 0x04, 0xe3,
+		0xff},
+		{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x14, 0x07,
+		0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
+		0x01, 0x00, 0x0f, 0x00},
+		{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x0f,
+		0xff}
 	},
 	/* ExtVGATable */
 	{
 		0x2f,
-		{0x01,0x0f,0x00,0x0e},
-		{0x5f,0x4f,0x50,0x82,0x54,0x80,0x0b,0x3e,
-		 0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,
-		 0xea,0x8c,0xdf,0x28,0x40,0xe7,0x04,0xa3,
-		 0xff},
-		{0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
-		 0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,
-		 0x01,0x00,0x00,0x00},
-		{0x00,0x00,0x00,0x00,0x00,0x40,0x05,0x0f,
-		 0xff}
+		{0x01, 0x0f, 0x00, 0x0e},
+		{0x5f, 0x4f, 0x50, 0x82, 0x54, 0x80, 0x0b, 0x3e,
+		0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0xea, 0x8c, 0xdf, 0x28, 0x40, 0xe7, 0x04, 0xa3,
+		0xff},
+		{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+		0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+		0x01, 0x00, 0x00, 0x00},
+		{0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0f,
+		0xff}
 	},
 	/* ExtHiCTable */
 	{
 		0x2f,
-		{0x01,0x0f,0x00,0x0e},
-		{0x5f,0x4f,0x50,0x82,0x54,0x80,0x0b,0x3e,
-		 0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,
-		 0xea,0x8c,0xdf,0x28,0x40,0xe7,0x04,0xa3,
-		 0xff},
-		{0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
-		 0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,
-		 0x01,0x00,0x00,0x00},
-		{0x00,0x00,0x00,0x00,0x00,0x00,0x05,0x0f,
-		 0xff}
+		{0x01, 0x0f, 0x00, 0x0e},
+		{0x5f, 0x4f, 0x50, 0x82, 0x54, 0x80, 0x0b, 0x3e,
+		0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0xea, 0x8c, 0xdf, 0x28, 0x40, 0xe7, 0x04, 0xa3,
+		0xff},
+		{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+		0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+		0x01, 0x00, 0x00, 0x00},
+		{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x0f,
+		0xff}
 	},
 	/* ExtTrueCTable */
 	{
 		0x2f,
-		{0x01,0x0f,0x00,0x0e},
-		{0x5f,0x4f,0x50,0x82,0x54,0x80,0x0b,0x3e,
-		 0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,
-		 0xea,0x8c,0xdf,0x28,0x40,0xe7,0x04,0xa3,
+		{0x01, 0x0f, 0x00, 0x0e},
+		{0x5f, 0x4f, 0x50, 0x82, 0x54, 0x80, 0x0b, 0x3e,
+		 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		 0xea, 0x8c, 0xdf, 0x28, 0x40, 0xe7, 0x04, 0xa3,
 		 0xff},
-		{0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
-		 0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,
-		 0x01,0x00,0x00,0x00},
-		{0x00,0x00,0x00,0x00,0x00,0x00,0x05,0x0f,
+		{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+		 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+		 0x01, 0x00, 0x00, 0x00},
+		{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x0f,
 		 0xff}
 	},
 };
 
-static struct ast_vbios_enhtable res_640x480[] = {
+static const struct ast_vbios_enhtable res_640x480[] = {
 	{ 800, 640, 8, 96, 525, 480, 2, 2, VCLK25_175,	/* 60Hz */
 	  (SyncNN | HBorder | VBorder | Charx8Dot), 60, 1, 0x2E },
 	{ 832, 640, 16, 40, 520, 480, 1, 3, VCLK31_5,	/* 72Hz */
@@ -196,7 +227,7 @@ static struct ast_vbios_enhtable res_640x480[] = {
 	  (SyncNN | Charx8Dot) , 0xFF, 4, 0x2E },
 };
 
-static struct ast_vbios_enhtable res_800x600[] = {
+static const struct ast_vbios_enhtable res_800x600[] = {
 	{1024, 800, 24, 72, 625, 600, 1, 2, VCLK36,	/* 56Hz */
 	 (SyncPP | Charx8Dot), 56, 1, 0x30 },
 	{1056, 800, 40, 128, 628, 600, 1, 4, VCLK40,	/* 60Hz */
@@ -212,7 +243,7 @@ static struct ast_vbios_enhtable res_800x600[] = {
 };
 
 
-static struct ast_vbios_enhtable res_1024x768[] = {
+static const struct ast_vbios_enhtable res_1024x768[] = {
 	{1344, 1024, 24, 136, 806, 768, 3, 6, VCLK65,	/* 60Hz */
 	 (SyncNN | Charx8Dot), 60, 1, 0x31 },
 	{1328, 1024, 24, 136, 806, 768, 3, 6, VCLK75,	/* 70Hz */
@@ -225,7 +256,7 @@ static struct ast_vbios_enhtable res_1024x768[] = {
 	 (SyncPP | Charx8Dot), 0xFF, 4, 0x31 },
 };
 
-static struct ast_vbios_enhtable res_1280x1024[] = {
+static const struct ast_vbios_enhtable res_1280x1024[] = {
 	{1688, 1280, 48, 112, 1066, 1024, 1, 3, VCLK108,	/* 60Hz */
 	 (SyncPP | Charx8Dot), 60, 1, 0x32 },
 	{1688, 1280, 16, 144, 1066, 1024, 1, 3, VCLK135,	/* 75Hz */
@@ -236,7 +267,7 @@ static struct ast_vbios_enhtable res_1280x1024[] = {
 	 (SyncPP | Charx8Dot), 0xFF, 3, 0x32 },
 };
 
-static struct ast_vbios_enhtable res_1600x1200[] = {
+static const struct ast_vbios_enhtable res_1600x1200[] = {
 	{2160, 1600, 64, 192, 1250, 1200, 1, 3, VCLK162,	/* 60Hz */
 	 (SyncPP | Charx8Dot), 60, 1, 0x33 },
 	{2160, 1600, 64, 192, 1250, 1200, 1, 3, VCLK162,	/* end */
@@ -244,34 +275,39 @@ static struct ast_vbios_enhtable res_1600x1200[] = {
 };
 
 /* 16:9 */
-static struct ast_vbios_enhtable res_1360x768[] = {
-	{1792, 1360, 64,112, 795,  768, 3, 6, VCLK85_5,	         /* 60Hz */
+static const struct ast_vbios_enhtable res_1360x768[] = {
+	{1792, 1360, 64, 112, 795, 768, 3, 6, VCLK85_5,		/* 60Hz */
 	 (SyncPP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 1, 0x39 },
-	{1792, 1360, 64,112, 795,  768, 3, 6, VCLK85_5,	         /* end */
-	 (SyncPP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 0xFF, 1, 0x39 },
+	{1792, 1360, 64, 112, 795, 768, 3, 6, VCLK85_5,	         /* end */
+	 (SyncPP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
+	  AST2500PreCatchCRT), 0xFF, 1, 0x39 },
 };
 
-static struct ast_vbios_enhtable res_1600x900[] = {
-	{1760, 1600, 48, 32, 926,  900, 3, 5, VCLK97_75,	/* 60Hz CVT RB */
-	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 1, 0x3A },
-	{2112, 1600, 88,168, 934,  900, 3, 5, VCLK118_25,	/* 60Hz CVT */
+static const struct ast_vbios_enhtable res_1600x900[] = {
+	{1760, 1600, 48, 32, 926, 900, 3, 5, VCLK97_75,		/* 60Hz CVT RB */
+	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
+	  AST2500PreCatchCRT), 60, 1, 0x3A },
+	{2112, 1600, 88, 168, 934, 900, 3, 5, VCLK118_25,	/* 60Hz CVT */
 	 (SyncPN | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 2, 0x3A },
-	{2112, 1600, 88,168, 934,  900, 3, 5, VCLK118_25,	/* 60Hz CVT */
+	{2112, 1600, 88, 168, 934, 900, 3, 5, VCLK118_25,	/* 60Hz CVT */
 	 (SyncPN | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 0xFF, 2, 0x3A },
 };
 
-static struct ast_vbios_enhtable res_1920x1080[] = {
+static const struct ast_vbios_enhtable res_1920x1080[] = {
 	{2200, 1920, 88, 44, 1125, 1080, 4, 5, VCLK148_5,	/* 60Hz */
-	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 1, 0x38 },
+	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
+	  AST2500PreCatchCRT), 60, 1, 0x38 },
 	{2200, 1920, 88, 44, 1125, 1080, 4, 5, VCLK148_5,	/* 60Hz */
-	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 0xFF, 1, 0x38 },
+	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
+	  AST2500PreCatchCRT), 0xFF, 1, 0x38 },
 };
 
 
 /* 16:10 */
-static struct ast_vbios_enhtable res_1280x800[] = {
+static const struct ast_vbios_enhtable res_1280x800[] = {
 	{1440, 1280, 48, 32,  823,  800, 3, 6, VCLK71,		/* 60Hz RB */
-	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 1, 0x35 },
+	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
+	  AST2500PreCatchCRT), 60, 1, 0x35 },
 	{1680, 1280, 72,128,  831,  800, 3, 6, VCLK83_5,	/* 60Hz */
 	 (SyncPN | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 2, 0x35 },
 	{1680, 1280, 72,128,  831,  800, 3, 6, VCLK83_5,	/* 60Hz */
@@ -279,29 +315,32 @@ static struct ast_vbios_enhtable res_1280x800[] = {
 
 };
 
-static struct ast_vbios_enhtable res_1440x900[] = {
+static const struct ast_vbios_enhtable res_1440x900[] = {
 	{1600, 1440, 48, 32,  926,  900, 3, 6, VCLK88_75,	/* 60Hz RB */
-	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 1, 0x36 },
+	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
+	  AST2500PreCatchCRT), 60, 1, 0x36 },
 	{1904, 1440, 80,152,  934,  900, 3, 6, VCLK106_5,	/* 60Hz */
 	 (SyncPN | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 2, 0x36 },
 	{1904, 1440, 80,152,  934,  900, 3, 6, VCLK106_5,	/* 60Hz */
 	 (SyncPN | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 0xFF, 2, 0x36 },
 };
 
-static struct ast_vbios_enhtable res_1680x1050[] = {
+static const struct ast_vbios_enhtable res_1680x1050[] = {
 	{1840, 1680, 48, 32, 1080, 1050, 3, 6, VCLK119,		/* 60Hz RB */
-	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 1, 0x37 },
+	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
+	  AST2500PreCatchCRT), 60, 1, 0x37 },
 	{2240, 1680,104,176, 1089, 1050, 3, 6, VCLK146_25,	/* 60Hz */
 	 (SyncPN | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 2, 0x37 },
 	{2240, 1680,104,176, 1089, 1050, 3, 6, VCLK146_25,	/* 60Hz */
 	 (SyncPN | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 0xFF, 2, 0x37 },
 };
 
-static struct ast_vbios_enhtable res_1920x1200[] = {
+static const struct ast_vbios_enhtable res_1920x1200[] = {
 	{2080, 1920, 48, 32, 1235, 1200, 3, 6, VCLK154,		/* 60Hz RB*/
-	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 1, 0x34 },
-	{2080, 1920, 48, 32, 1235, 1200, 3, 6, VCLK154,	/* 60Hz RB */
-	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 0xFF, 1, 0x34 },
+	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
+	  AST2500PreCatchCRT), 60, 1, 0x34 },
+	{2080, 1920, 48, 32, 1235, 1200, 3, 6, VCLK154,		/* 60Hz RB */
+	 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
+	  AST2500PreCatchCRT), 0xFF, 1, 0x34 },
 };
-
 #endif