[U-Boot] [PATCH v2 10/18] bios: vesa: Guard setting vesa mode with CONFIG_FRAMEBUFFER_SET_VESA_MODE

[Bin Meng]

If CONFIG_FRAMEBUFFER_SET_VESA_MODE is not set, don't switch
graphics card to VESA mode. This applies to both native mode
and emulator mode of running the VGA BIOS.

Signed-off-by: Bin Meng <bmeng...@gmail.com>
---

Changes in v2: None

 arch/x86/lib/bios.c             | 4 ++++
 drivers/bios_emulator/atibios.c | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/arch/x86/lib/bios.c b/arch/x86/lib/bios.c
index 66d7629..f9092fd 100644
--- a/arch/x86/lib/bios.c
+++ b/arch/x86/lib/bios.c
@@ -185,6 +185,7 @@ static void setup_realmode_idt(void)
        write_idt_stub((void *)0xffe6e, 0x1a);
 }
 
+#ifdef CONFIG_FRAMEBUFFER_SET_VESA_MODE
 static u8 vbe_get_mode_info(struct vbe_mode_info *mi)
 {
        u16 buffer_seg;
@@ -241,6 +242,7 @@ static void vbe_set_graphics(int vesa_mode, struct 
vbe_mode_info *mode_info)
        mode_info->video_mode &= 0x3ff;
        vbe_set_mode(mode_info);
 }
+#endif /* CONFIG_FRAMEBUFFER_SET_VESA_MODE */
 
 void bios_run_on_x86(struct udevice *dev, unsigned long addr, int vesa_mode,
                     struct vbe_mode_info *mode_info)
@@ -273,8 +275,10 @@ void bios_run_on_x86(struct udevice *dev, unsigned long 
addr, int vesa_mode,
                      0x0);
        debug("done\n");
 
+#ifdef CONFIG_FRAMEBUFFER_SET_VESA_MODE
        if (vesa_mode != -1)
                vbe_set_graphics(vesa_mode, mode_info);
+#endif
 }
 
 asmlinkage int interrupt_handler(u32 intnumber, u32 gsfs, u32 dses,
diff --git a/drivers/bios_emulator/atibios.c b/drivers/bios_emulator/atibios.c
index 2d5b5dc..07e45f2 100644
--- a/drivers/bios_emulator/atibios.c
+++ b/drivers/bios_emulator/atibios.c
@@ -78,6 +78,7 @@ static const void *bios_ptr(const void *buf, BE_VGAInfo 
*vga_info,
                return buf + (flat - vbe_offset);
 }
 
+#ifdef CONFIG_FRAMEBUFFER_SET_VESA_MODE
 static int atibios_debug_mode(BE_VGAInfo *vga_info, RMREGS *regs,
                              int vesa_mode, struct vbe_mode_info *mode_info)
 {
@@ -215,6 +216,7 @@ static int atibios_set_vesa_mode(RMREGS *regs, int 
vesa_mode,
 
        return 0;
 }
+#endif /* CONFIG_FRAMEBUFFER_SET_VESA_MODE */
 
 /****************************************************************************
 PARAMETERS:
@@ -263,11 +265,13 @@ static void PCI_doBIOSPOST(pci_dev_t pcidev, BE_VGAInfo 
*vga_info,
        /*Cleanup and exit*/
        BE_getVGA(vga_info);
 
+#ifdef CONFIG_FRAMEBUFFER_SET_VESA_MODE
        /* Useful for debugging */
        if (0)
                atibios_debug_mode(vga_info, &regs, vesa_mode, mode_info);
        if (vesa_mode != -1)
                atibios_set_vesa_mode(&regs, vesa_mode, mode_info);
+#endif
 }
 
 /****************************************************************************
-- 
2.7.4

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