diff options
author | dfr <dfr@FreeBSD.org> | 2001-10-25 08:53:39 +0000 |
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committer | dfr <dfr@FreeBSD.org> | 2001-10-25 08:53:39 +0000 |
commit | ec791e2f384f208e3ce45d8d3a0757237d2b1795 (patch) | |
tree | 048c7a68a85908e35d6768820aabd608514b4d60 /sys/boot/efi/libefi | |
parent | 1455d39753bd869aa1aeafce97b26652b7b44fc6 (diff) | |
download | FreeBSD-src-ec791e2f384f208e3ce45d8d3a0757237d2b1795.zip FreeBSD-src-ec791e2f384f208e3ce45d8d3a0757237d2b1795.tar.gz |
Call ExitBootServices and disable interrupts before we start hacking
the VM registers. This ought to make things slightly more reliable here.
Diffstat (limited to 'sys/boot/efi/libefi')
-rw-r--r-- | sys/boot/efi/libefi/elf_freebsd.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/sys/boot/efi/libefi/elf_freebsd.c b/sys/boot/efi/libefi/elf_freebsd.c index 8a64c1b..2aaaa39 100644 --- a/sys/boot/efi/libefi/elf_freebsd.c +++ b/sys/boot/efi/libefi/elf_freebsd.c @@ -115,16 +115,9 @@ restore_ic(u_int64_t psr) * Entered with psr.ic and psr.i both zero. */ void -enter_kernel(u_int64_t start, struct bootinfo *bi, UINTN mapkey) +enter_kernel(u_int64_t start, struct bootinfo *bi) { u_int64_t psr; - EFI_STATUS status; - - status = BS->ExitBootServices(IH, mapkey); - if (EFI_ERROR(status)) { - printf("ExitBootServices returned 0x%lx\n", status); - return; - } __asm __volatile("srlz.i;;"); __asm __volatile("mov cr.ipsr=%0" @@ -149,6 +142,7 @@ elf_exec(struct preloaded_file *fp) struct bootinfo *bi; u_int64_t psr; UINTN mapkey; + EFI_STATUS status; if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) return(EFTYPE); /* XXX actually EFUCKUP */ @@ -164,6 +158,14 @@ elf_exec(struct preloaded_file *fp) bzero(bi, sizeof(struct bootinfo)); bi_load(bi, fp, &mapkey); + status = BS->ExitBootServices(IH, mapkey); + if (EFI_ERROR(status)) { + printf("ExitBootServices returned 0x%lx\n", status); + return; + } + + psr = disable_ic(); + /* * Region 6 is direct mapped UC and region 7 is direct mapped * WC. The details of this is controlled by the Alt {I,D}TLB @@ -173,8 +175,6 @@ elf_exec(struct preloaded_file *fp) ia64_set_rr(IA64_RR_BASE(6), (6 << 8) | (28 << 2)); ia64_set_rr(IA64_RR_BASE(7), (7 << 8) | (28 << 2)); - psr = disable_ic(); - bzero(&pte, sizeof(pte)); pte.pte_p = 1; pte.pte_ma = PTE_MA_WB; @@ -191,6 +191,7 @@ elf_exec(struct preloaded_file *fp) __asm __volatile("srlz.i;;"); __asm __volatile("itr.i itr[%0]=%1;;" :: "r"(0), "r"(*(u_int64_t*)&pte)); + __asm __volatile("srlz.i;;"); __asm __volatile("itr.d dtr[%0]=%1;;" :: "r"(0), "r"(*(u_int64_t*)&pte)); __asm __volatile("srlz.i;;"); @@ -212,7 +213,7 @@ elf_exec(struct preloaded_file *fp) :: "r"(1), "r"(*(u_int64_t*)&pte)); __asm __volatile("srlz.i;;"); - enter_kernel(hdr->e_entry, bi, mapkey); + enter_kernel(hdr->e_entry, bi); restore_ic(psr); } |