196e07ab05
This patch makes Limine advertise its branding and the ESP partition GUID to systemd over the Boot Loader Interface specification. There's more to the Boot Loader Interface than these variables, but this acts as an initial implementation. See #473. BLI variables are initialised for all protocols, not just Linux. While currently only systemd makes use of it, this allows future Limine protocol kernels (or their userspace) to discover the ESP.
37 lines
994 B
C
37 lines
994 B
C
#if defined (UEFI)
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#include <config.h>
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#include <efi.h>
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#include <lib/bli.h>
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#include <lib/guid.h>
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#include <lib/misc.h>
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#define LIMINE_BRAND L"Limine " LIMINE_VERSION
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static EFI_GUID bli_vendor_guid = { 0x4a67b082, 0x0a4c, 0x41cf, { 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f } };
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void init_bli(void) {
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gRT->SetVariable(L"LoaderInfo",
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&bli_vendor_guid,
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EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
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sizeof(LIMINE_BRAND),
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LIMINE_BRAND);
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char part_uuid_str[37];
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guid_to_string(&boot_volume->part_guid, part_uuid_str);
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// Convert part_uuid_str to a wide-char string
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wchar_t part_uuid[37];
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for (size_t i = 0; i < 37; i++) {
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part_uuid[i] = (wchar_t) part_uuid_str[i];
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}
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gRT->SetVariable(L"LoaderDevicePartUUID",
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&bli_vendor_guid,
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EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
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sizeof(part_uuid),
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part_uuid);
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}
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#endif
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