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authorRoger Pau Monné <royger@FreeBSD.org>2021-02-05 10:11:36 +0000
committerRoger Pau Monné <royger@FreeBSD.org>2021-02-16 14:26:11 +0000
commit7d3259775cb69f250df3e7fe51d6fff2283c6f20 (patch)
treefe4709fcea8114801283c5bcfd3fbe6e4750c1fd
parented87efbe24a5734c7150153cf201f3db42b6ddab (diff)
downloadsrc-7d3259775cb69f250df3e7fe51d6fff2283c6f20.tar.gz
src-7d3259775cb69f250df3e7fe51d6fff2283c6f20.zip
stand/efi: add modulep to kernel metadata
This mirrors the functionality of the BIOS amd64 bi_load function, that stashes the absolute address of the module metadata. This is required for booting as a Xen dom0 that does relocate the modulep and the loaded modules, and thus requires adjusting the offset. No functional change introduced, further patches will make use of this functionality for Xen dom0 loading. Sponsored by: Citrix Systems R&D Reviewed by: imp Differential revision: https://reviews.freebsd.org/D28496
-rw-r--r--stand/efi/loader/bootinfo.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/stand/efi/loader/bootinfo.c b/stand/efi/loader/bootinfo.c
index 111bc92422a1..89ff6dca18d9 100644
--- a/stand/efi/loader/bootinfo.c
+++ b/stand/efi/loader/bootinfo.c
@@ -439,7 +439,7 @@ bi_load(char *args, vm_offset_t *modulep, vm_offset_t *kernendp, bool exit_bs)
struct devdesc *rootdev;
struct file_metadata *md;
vm_offset_t addr;
- uint64_t kernend;
+ uint64_t kernend, module;
uint64_t envp;
vm_offset_t size;
char *rootdevname;
@@ -518,6 +518,10 @@ bi_load(char *args, vm_offset_t *modulep, vm_offset_t *kernendp, bool exit_bs)
if (kfp == NULL)
panic("can't find kernel file");
kernend = 0; /* fill it in later */
+
+ /* Figure out the size and location of the metadata. */
+ module = *modulep = addr;
+
file_addmetadata(kfp, MODINFOMD_HOWTO, sizeof(howto), &howto);
file_addmetadata(kfp, MODINFOMD_ENVP, sizeof(envp), &envp);
#if defined(LOADER_FDT_SUPPORT)
@@ -528,14 +532,13 @@ bi_load(char *args, vm_offset_t *modulep, vm_offset_t *kernendp, bool exit_bs)
"device tree blob found!\n");
#endif
file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof(kernend), &kernend);
+ file_addmetadata(kfp, MODINFOMD_MODULEP, sizeof(module), &module);
file_addmetadata(kfp, MODINFOMD_FW_HANDLE, sizeof(ST), &ST);
#ifdef LOADER_GELI_SUPPORT
geli_export_key_metadata(kfp);
#endif
bi_load_efi_data(kfp, exit_bs);
- /* Figure out the size and location of the metadata. */
- *modulep = addr;
size = bi_copymodules(0);
kernend = roundup(addr + size, PAGE_SIZE);
*kernendp = kernend;