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@@ -8,6 +8,8 @@
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#ifndef _VXWORKS_H_
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#define _VXWORKS_H_
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+#include <efi_api.h>
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+
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/*
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* Physical address of memory base for VxWorks x86
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* This is LOCAL_MEM_LOCAL_ADRS in the VxWorks kernel configuration.
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@@ -52,6 +54,30 @@ struct e820_info {
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*/
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#define BOOT_IMAGE_SIZE_OFFSET 0x5004
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+/*
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+ * When booting from EFI BIOS, VxWorks bootloader stores the EFI GOP
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+ * framebuffer info at a pre-defined offset @ 0x6100. When VxWorks kernel
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+ * boots up, its EFI console driver tries to find such a block and if
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+ * the signature matches, the framebuffer information will be used to
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+ * initialize the driver.
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+ *
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+ * However it is not necessary to prepare an EFI environment for VxWorks's
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+ * EFI console driver to function (eg: EFI loader in U-Boot). If U-Boot has
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+ * already initialized the graphics card and set it to a VESA mode that is
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+ * compatible with EFI GOP, we can simply prepare such a block for VxWorks.
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+ */
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+#define EFI_GOP_INFO_OFFSET 0x6100
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+
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+/* EFI GOP info signatiure */
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+#define EFI_GOP_INFO_MAGIC 0xfeedface
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+
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+struct efi_gop_info {
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+ u32 magic; /* signature */
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+ struct efi_gop_mode_info info; /* EFI GOP mode info structure */
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+ phys_addr_t fb_base; /* framebuffer base address */
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+ u32 fb_size; /* framebuffer size */
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+};
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+
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int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
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void boot_prep_vxworks(bootm_headers_t *images);
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void boot_jump_vxworks(bootm_headers_t *images);
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