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| author | Stefan Roese <sr@denx.de> | 2007-11-20 11:19:16 +0100 |
|---|---|---|
| committer | Josh Boyer <jwboyer@linux.vnet.ibm.com> | 2007-12-23 20:31:16 +0100 |
| commit | f4151b9ba87901eb3a7bc49f418cc352d4e1927e (patch) | |
| tree | 7481891935cea47d7794e583a6fdfe530575c17d /include/asm-ppc/bootinfo.h | |
| parent | [POWERPC] 4xx: libfdt and pci fixes for Rainier (diff) | |
| download | linux-f4151b9ba87901eb3a7bc49f418cc352d4e1927e.tar.xz linux-f4151b9ba87901eb3a7bc49f418cc352d4e1927e.zip | |
[POWERPC] 4xx: Fix TLB 0 problem with CONFIG_SERIAL_TEXT_DEBUG
Right now TLB entry 0 ist used as UART0 mapping for the early debug
output (via CONFIG_SERIAL_TEXT_DEBUG). This causes problems when many
TLB's get used upon Linux bootup (e.g. while PCIe scanning behind
bridges and/or switches on 440SPe platforms). This will overwrite the
TLB 0 entry and further debug output's may crash/hang the system.
This patch moves the early debug UART0 TLB entry from 0 to 62 as done
in arch/powerpc. This way it is in the "pinned" area and will not get
overwritten. Also the arch/ppc/mm/44x_mmu.c code is now synced with the
newer code from arch/powerpc.
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Diffstat (limited to 'include/asm-ppc/bootinfo.h')
0 files changed, 0 insertions, 0 deletions