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| author | Kevin O'Connor <kevin@koconnor.net> | 2015-09-22 12:35:00 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2015-10-09 13:30:59 -0400 |
| commit | 62de31b4feb5eacc4139f4d9fc28ae102921b4c7 (patch) | |
| tree | abc7644646894282e58daac29d90ac86e7b66c37 /src/romlayout.S | |
| parent | 4c599ef3960ed8f2aaf7a73980814ebe42e37bf3 (diff) | |
| download | seabios-62de31b4feb5eacc4139f4d9fc28ae102921b4c7.tar.gz | |
Always enable caching on transition32; backup/restore cr0 on call32
Always enable caching at start of 32bit code and always make sure the
paging flag is off. Because this alters the cr0 register, perform a
backup and restore of it when using call32().
Also, rename get/setcr0() to cr0_read/write() to more closely match
other register access functions.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'src/romlayout.S')
| -rw-r--r-- | src/romlayout.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/romlayout.S b/src/romlayout.S index fefc212e..823188b6 100644 --- a/src/romlayout.S +++ b/src/romlayout.S @@ -47,6 +47,7 @@ transition32_nmi_off: // Enable protected mode movl %cr0, %ecx + andl $~(CR0_PG|CR0_CD|CR0_NW), %ecx orl $CR0_PE, %ecx movl %ecx, %cr0 |