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loader.efi: make sure kernel image is executable

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The Windows Dev Kit 2023 (Volterra) has an UEFI implementation that maps
EfiLoaderData pages as non-executable.  Map the kernel as EfiLoaderCode
to ensure that it can be executed.

With this change and another in review, FreeBSD boots to the mountroot
prompt if hw.pac.enable = 0 is set in loader.conf(5).

Reviewed by:	andrew, imp, tsoome
Sponsored by:	Berliner Linux User Group e.V.
Sponsored by:	spline / FU-Berlin
Differential Revision: https://reviews.freebsd.org/D37931
This commit is contained in:
Robert Clausecker 2023-01-02 22:12:50 +01:00 committed by Andrew Turner
parent 0deb25bd9d
commit 95fa2e0aee
1 changed files with 4 additions and 4 deletions
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8
stand/efi/loader/copy.c
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@ -330,7 +330,7 @@ efi_copy_init(void)
staging = get_staging_max();
#endif
status = BS->AllocatePages(EFI_ALLOC_METHOD, EfiLoaderData,
status = BS->AllocatePages(EFI_ALLOC_METHOD, EfiLoaderCode,
nr_pages, &staging);
if (EFI_ERROR(status)) {
printf("failed to allocate staging area: %lu\n",
@ -398,7 +398,7 @@ efi_check_space(vm_offset_t end)
/* Try to allocate more space after the previous allocation */
addr = staging_end;
status = BS->AllocatePages(AllocateAddress, EfiLoaderData, nr_pages,
status = BS->AllocatePages(AllocateAddress, EfiLoaderCode, nr_pages,
&addr);
if (!EFI_ERROR(status)) {
staging_end = staging_end + nr_pages * EFI_PAGE_SIZE;
@ -415,7 +415,7 @@ before_staging:
addr = rounddown2(addr, M(2));
#endif
nr_pages = EFI_SIZE_TO_PAGES(staging_base - addr);
status = BS->AllocatePages(AllocateAddress, EfiLoaderData, nr_pages,
status = BS->AllocatePages(AllocateAddress, EfiLoaderCode, nr_pages,
&addr);
if (!EFI_ERROR(status)) {
/*
@ -438,7 +438,7 @@ expand:
#if defined(__i386__) || defined(__amd64__)
new_base = get_staging_max();
#endif
status = BS->AllocatePages(EFI_ALLOC_METHOD, EfiLoaderData,
status = BS->AllocatePages(EFI_ALLOC_METHOD, EfiLoaderCode,
nr_pages, &new_base);
if (!EFI_ERROR(status)) {
#if EFI_STAGING_2M_ALIGN