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authorStefano Babic <sbabic@denx.de>2014-08-08 10:18:40 +0200
committerStefano Babic <sbabic@denx.de>2014-08-08 10:18:40 +0200
commitc23154aab5825fec81d5500c53eaa686646c76b5 (patch)
tree32b0aafae49f664a65ced50981492bb031f006b8 /README
parentcb07d74e2e0c0a41533b6bcd551af9bf2ebcf2bc (diff)
parent9d195a546179bc732aba9eacccf0a9a3db591288 (diff)
Merge branch 'master' of git://git.denx.de/u-boot-arm
Diffstat (limited to 'README')
-rw-r--r--README16
1 files changed, 16 insertions, 0 deletions
diff --git a/README b/README
index 37e4d1b09d2..cdccae99539 100644
--- a/README
+++ b/README
@@ -3751,6 +3751,22 @@ Configuration Settings:
- CONFIG_SYS_MALLOC_LEN:
Size of DRAM reserved for malloc() use.
+- CONFIG_SYS_MALLOC_F_LEN
+ Size of the malloc() pool for use before relocation. If
+ this is defined, then a very simple malloc() implementation
+ will become available before relocation. The address is just
+ below the global data, and the stack is moved down to make
+ space.
+
+ This feature allocates regions with increasing addresses
+ within the region. calloc() is supported, but realloc()
+ is not available. free() is supported but does nothing.
+ The memory will be freed (or in fact just forgotton) when
+ U-Boot relocates itself.
+
+ Pre-relocation malloc() is only supported on sandbox
+ at present but is fairly easy to enable for other archs.
+
- CONFIG_SYS_BOOTM_LEN:
Normally compressed uImages are limited to an
uncompressed size of 8 MBytes. If this is not enough,