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* lib: lmb: fix overflow in __lmb_alloc_base w/ large RAMStephen Warren2014-08-09-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | If a 32-bit system has 2GB of RAM, and the base address of that RAM is 2GB, then start+size will overflow a 32-bit value (to a value of 0). __lmb_alloc_base is affected by this; it calculates the minimum of (start+size of RAM) and max_addr. However, when start+size is 0, it is always less than max_addr, which causes the value of max_addr not to be taken into account when restricting the allocation's location. Fix this by calculating start+size separately, and if that calculation underflows, using -1 (interpreted as the max unsigned value) as the value instead, and then taking the min of that and max_addr. Now that start+size doesn't overflow, it's typically large, and max_addr dominates the min() call, and is taken into account. The user-visible symptom of this bug is that CONFIG_BOOTMAP_SZ is ignored on Tegra124 systems with 2GB of RAM, which in turn causes the DT to be relocated at the very end of RAM, which the ARM Linux kernel doesn't map during early boot, and which causes boot failures. With this fix, CONFIG_BOOTMAP_SZ correctly restricts the relocated DT to a much lower address, and everything works. Signed-off-by: Stephen Warren <swarren@nvidia.com>
* lib:lmb: use __weakJeroen Hofstee2014-07-18-4/+2
| | | | | | | This not only looks a bit better it also prevents a warning with W=1 (no previous prototype). Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-4/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* Rename lib_generic/ to lib/Peter Tyser2010-04-13-0/+348
Now that the other architecture-specific lib directories have been moved out of the top-level directory there's not much reason to have the '_generic' suffix on the common lib directory. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>