Converted the FRAMEBUFFER_VESA_MODE to a choice.

Being a diligent soul, I changed the "enter a numeric value for the
mode you want" option to a choice of common modes.  New modes can be
added quite easily.

Change-Id: I8cf4572c2d36ced6549541ec173c0c02d8eaca4a
Signed-off-by: Steve Goodrich <steve.goodrich@se-eng.com>
Reviewed-on: http://review.coreboot.org/1036
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>

src/Kconfig

@@ -615,16 +615,131 @@ config FRAMEBUFFER_SET_VESA_MODE
 	help
 	  Set VESA framebuffer mode (needed for bootsplash)
 
-# TODO: Turn this into a "choice".
-config FRAMEBUFFER_VESA_MODE
+choice
 	prompt "VESA framebuffer video mode"
-	hex
-	default 0x117
+	default FRAMEBUFFER_VESA_MODE_117
 	depends on FRAMEBUFFER_SET_VESA_MODE
 	help
 	  This option sets the resolution used for the coreboot framebuffer (and
-	  bootsplash screen). Set to 0x117 for 1024x768x16. A diligent soul will
-	  some day make this a "choice".
+	  bootsplash screen).
+
+config FRAMEBUFFER_VESA_MODE_100
+	bool "640x400 256-color"
+
+config FRAMEBUFFER_VESA_MODE_101
+	bool "640x480 256-color"
+
+config FRAMEBUFFER_VESA_MODE_102
+	bool "800x600 16-color"
+
+config FRAMEBUFFER_VESA_MODE_103
+	bool "800x600 256-color"
+
+config FRAMEBUFFER_VESA_MODE_104
+	bool "1024x768 16-color"
+
+config FRAMEBUFFER_VESA_MODE_105
+	bool "1024x7686 256-color"
+
+config FRAMEBUFFER_VESA_MODE_106
+	bool "1280x1024 16-color"
+
+config FRAMEBUFFER_VESA_MODE_107
+	bool "1280x1024 256-color"
+
+config FRAMEBUFFER_VESA_MODE_108
+	bool "80x60 text"
+
+config FRAMEBUFFER_VESA_MODE_109
+	bool "132x25 text"
+
+config FRAMEBUFFER_VESA_MODE_10A
+	bool "132x43 text"
+
+config FRAMEBUFFER_VESA_MODE_10B
+	bool "132x50 text"
+
+config FRAMEBUFFER_VESA_MODE_10C
+	bool "132x60 text"
+
+config FRAMEBUFFER_VESA_MODE_10D
+	bool "320x200 32k-color (1:5:5:5)"
+
+config FRAMEBUFFER_VESA_MODE_10E
+	bool "320x200 64k-color (5:6:5)"
+
+config FRAMEBUFFER_VESA_MODE_10F
+	bool "320x200 16.8M-color (8:8:8)"
+
+config FRAMEBUFFER_VESA_MODE_110
+	bool "640x480 32k-color (1:5:5:5)"
+
+config FRAMEBUFFER_VESA_MODE_111
+	bool "640x480 64k-color (5:6:5)"
+
+config FRAMEBUFFER_VESA_MODE_112
+	bool "640x480 16.8M-color (8:8:8)"
+
+config FRAMEBUFFER_VESA_MODE_113
+	bool "800x600 32k-color (1:5:5:5)"
+
+config FRAMEBUFFER_VESA_MODE_114
+	bool "800x600 64k-color (5:6:5)"
+
+config FRAMEBUFFER_VESA_MODE_115
+	bool "800x600 16.8M-color (8:8:8)"
+
+config FRAMEBUFFER_VESA_MODE_116
+	bool "1024x768 32k-color (1:5:5:5)"
+
+config FRAMEBUFFER_VESA_MODE_117
+	bool "1024x768 64k-color (5:6:5)"
+
+config FRAMEBUFFER_VESA_MODE_118
+	bool "1024x768 16.8M-color (8:8:8)"
+
+config FRAMEBUFFER_VESA_MODE_119
+	bool "1280x1024 32k-color (1:5:5:5)"
+
+config FRAMEBUFFER_VESA_MODE_11A
+	bool "1280x1024 64k-color (5:6:5)"
+
+config FRAMEBUFFER_VESA_MODE_11B
+	bool "1280x1024 16.8M-color (8:8:8)"
+
+endchoice
+
+# Map the config names to an integer (KB).
+config FRAMEBUFFER_VESA_MODE
+	hex
+	default 0x100 if FRAMEBUFFER_VESA_MODE_100
+	default 0x101 if FRAMEBUFFER_VESA_MODE_101
+	default 0x102 if FRAMEBUFFER_VESA_MODE_102
+	default 0x103 if FRAMEBUFFER_VESA_MODE_103
+	default 0x104 if FRAMEBUFFER_VESA_MODE_104
+	default 0x105 if FRAMEBUFFER_VESA_MODE_105
+	default 0x106 if FRAMEBUFFER_VESA_MODE_106
+	default 0x107 if FRAMEBUFFER_VESA_MODE_107
+	default 0x108 if FRAMEBUFFER_VESA_MODE_108
+	default 0x109 if FRAMEBUFFER_VESA_MODE_109
+	default 0x10A if FRAMEBUFFER_VESA_MODE_10A
+	default 0x10B if FRAMEBUFFER_VESA_MODE_10B
+	default 0x10C if FRAMEBUFFER_VESA_MODE_10C
+	default 0x10D if FRAMEBUFFER_VESA_MODE_10D
+	default 0x10E if FRAMEBUFFER_VESA_MODE_10E
+	default 0x10F if FRAMEBUFFER_VESA_MODE_10F
+	default 0x110 if FRAMEBUFFER_VESA_MODE_110
+	default 0x111 if FRAMEBUFFER_VESA_MODE_111
+	default 0x112 if FRAMEBUFFER_VESA_MODE_112
+	default 0x113 if FRAMEBUFFER_VESA_MODE_113
+	default 0x114 if FRAMEBUFFER_VESA_MODE_114
+	default 0x115 if FRAMEBUFFER_VESA_MODE_115
+	default 0x116 if FRAMEBUFFER_VESA_MODE_116
+	default 0x117 if FRAMEBUFFER_VESA_MODE_117
+	default 0x118 if FRAMEBUFFER_VESA_MODE_118
+	default 0x119 if FRAMEBUFFER_VESA_MODE_119
+	default 0x11A if FRAMEBUFFER_VESA_MODE_11A
+	default 0x11B if FRAMEBUFFER_VESA_MODE_11B
 
 config FRAMEBUFFER_KEEP_VESA_MODE
 	prompt "Keep VESA framebuffer"