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| author | Wolfgang Wegner <w.wegner@astro-kom.de> | 2010-03-02 10:59:20 +0100 |
|---|---|---|
| committer | TsiChung Liew <tsicliew@gmail.com> | 2010-03-04 01:46:53 -0600 |
| commit | c7de810c79a00aa6fc08900ee0bb57bd295db733 (patch) | |
| tree | a9438f0823000b68a17fb92d0648cb33dd1876cd /cpu/mcf532x/speed.c | |
| parent | bb907ab51fd04255923b7ecf9dab352078808351 (diff) | |
| download | u-boot-imx-c7de810c79a00aa6fc08900ee0bb57bd295db733.zip u-boot-imx-c7de810c79a00aa6fc08900ee0bb57bd295db733.tar.gz u-boot-imx-c7de810c79a00aa6fc08900ee0bb57bd295db733.tar.bz2 | |
allow MCF532x to use CONFIG_MONITOR_IS_IN_RAM
CONFIG_MONITOR_IS_IN_RAM is broken for MCF532x. This patch fixes this
by conditionally
- removing the vector table at the beginning of code
- not overwriting the vector base register
- removing the code to re-set the PLL, which effectively disables
SDRAM access
Signed-off-by: Wolfgang Wegner <w.wegner@astro-kom.de>
Diffstat (limited to 'cpu/mcf532x/speed.c')
| -rw-r--r-- | cpu/mcf532x/speed.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/cpu/mcf532x/speed.c b/cpu/mcf532x/speed.c index 0d378e6..67f08c7 100644 --- a/cpu/mcf532x/speed.c +++ b/cpu/mcf532x/speed.c @@ -204,6 +204,8 @@ int clock_pll(int fsys, int flags) fout = ((fref * mfd) / (BUSDIV * 4)); #endif +/* must not tamper with SDRAMC if running from SDRAM */ +#if !defined(CONFIG_MONITOR_IS_IN_RAM) /* * Check to see if the SDRAM has already been initialized. * If it has then the SDRAM needs to be put into self refresh @@ -254,6 +256,7 @@ int clock_pll(int fsys, int flags) /* wait for DQS logic to relock */ for (i = 0; i < 0x200; i++) ; +#endif /* !defined(CONFIG_MONITOR_IS_IN_RAM) */ return fout; } |