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author | Liam Merwick <liam.merwick@oracle.com> | 2018-11-20 13:01:47 +0000 |
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committer | Paolo Bonzini <bonzini@gnu.org> | 2018-12-28 14:31:29 +0100 |
commit | fec27f4d23b7335a72c4c6a4bb75e94e7500669a (patch) | |
tree | 51186d1df58fec3a27874708888bc58fccdf5089 /tables.c | |
parent | 281da37f5907f48b10c62622551446e8f14aea09 (diff) | |
download | qboot-fec27f4d23b7335a72c4c6a4bb75e94e7500669a.zip qboot-fec27f4d23b7335a72c4c6a4bb75e94e7500669a.tar.gz qboot-fec27f4d23b7335a72c4c6a4bb75e94e7500669a.tar.bz2 |
pvh: use x86/HVM direct boot ABI
These changes (along with corresponding QEMU and Linux kernel changes)
enable a guest to be booted using the x86/HVM direct boot ABI.
QEMU parses the uncompressed kernel binary passed to it via -kernel
to read the ELF Note which contains the address to be loaded. QEMU
then depends on qboot to populate the start_info struct needed by
the direct boot ABI and configure the guest e820 tables before
jumping to the loaded kernel entry.
Signed-off-by: George Kennedy <George.Kennedy@oracle.com>
Signed-off-by: Liam Merwick <Liam.Merwick@oracle.com>
Diffstat (limited to 'tables.c')
-rw-r--r-- | tables.c | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -2,6 +2,9 @@ #include "stdio.h" #include "fw_cfg.h" #include "string.h" +#include "start_info.h" + +extern struct hvm_start_info start_info; struct loader_cmd { uint32_t cmd; @@ -67,6 +70,13 @@ static void do_alloc(char *file, uint32_t align, uint8_t zone) set_file_addr(id, p); fw_cfg_read_file(id, p, n); + + /* For PVH boot, save the PA where the RSDP is stored */ + if (zone == ALLOC_FSEG) { + if (!memcmp(p, "RSD PTR ", 8)) { + start_info.rsdp_paddr = (uintptr_t)id_to_addr(id); + } + } } static void do_ptr(char *dest, char *src, uint32_t offset, uint8_t size) |