riscv: enable EFI framebuffer

Pass framebuffer information from loader(8) to the kernel via the
MODINFOMD_EFI_FB metadata field.

Enable the vt_efifb driver. A small tweak is required to work around the
lack of VM_MEMATTR_WRITE_COMBINING on this platform; we use
VM_MEMATTR_UNCACHEABLE instead.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D48884

This commit is contained in:

Mitchell Horne

2025-03-03 11:46:39 -04:00

parent a2e2178402

commit e2a08ac9ce

4 changed files with 10 additions and 3 deletions

									
										stand/efi/loader/bootinfo.c
									
		+1
		-1
	
												View File
												
				@@ -182,7 +182,7 @@ bi_load_efi_data(struct preloaded_file *kfp, bool exit_bs)

					struct efi_map_header *efihdr;

					bool do_vmap;

				#if defined(__amd64__) || defined(__aarch64__) || defined(__i386__)

				#ifdef MODINFOMD_EFI_FB

					struct efi_fb efifb;

					efifb.fb_addr = gfx_state.tg_fb.fb_addr;