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author | Gabe Black | 2012-12-01 22:55:18 -0600 |
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committer | Simon Glass | 2012-12-06 16:30:40 -0600 |
commit | 40fef0490610686022f99b8e070df7ac761c11a0 (patch) | |
tree | d3338158170744d00fb569ffac2edecbf72dbd2c /README | |
parent | ec516c489969c1c12e9b26900facee6efd60c938 (diff) | |
download | u-boot-40fef0490610686022f99b8e070df7ac761c11a0.tar.gz u-boot-40fef0490610686022f99b8e070df7ac761c11a0.tar.xz u-boot-40fef0490610686022f99b8e070df7ac761c11a0.zip |
Introduce arch_phys_memset which works like memset but on physical memory
The default implementation of this function is just memset, but other
implementations will be needed when physical memory isn't accessible by
U-Boot using normal addressing mechanisms.
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'README')
-rw-r--r-- | README | 8 |
1 files changed, 8 insertions, 0 deletions
@@ -2200,6 +2200,14 @@ CBFS (Coreboot Filesystem) support | |||
2200 | HERMES, IP860, RPXlite, LWMON, | 2200 | HERMES, IP860, RPXlite, LWMON, |
2201 | FLAGADM, TQM8260 | 2201 | FLAGADM, TQM8260 |
2202 | 2202 | ||
2203 | - Access to physical memory region (> 4GB) | ||
2204 | Some basic support is provided for operations on memory not | ||
2205 | normally accessible to U-Boot - e.g. some architectures | ||
2206 | support access to more than 4GB of memory on 32-bit | ||
2207 | machines using physical address extension or similar. | ||
2208 | Define CONFIG_PHYSMEM to access this basic support, which | ||
2209 | currently only supports clearing the memory. | ||
2210 | |||
2203 | - Error Recovery: | 2211 | - Error Recovery: |
2204 | CONFIG_PANIC_HANG | 2212 | CONFIG_PANIC_HANG |
2205 | 2213 | ||