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| author | Marek Vasut <marex@denx.de> | 2012-05-29 19:43:13 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-07-07 14:07:29 +0200 |
| commit | e3ddc646031551627c4eeae4598f8862251a3f94 (patch) | |
| tree | 032ac5adc0dc06de2177b590c636058f49c28748 /arch/arm/cpu | |
| parent | eeacb73b8e0823b400eda5022e56e9f5a59b37a0 (diff) | |
| download | u-boot-imx-e3ddc646031551627c4eeae4598f8862251a3f94.zip u-boot-imx-e3ddc646031551627c4eeae4598f8862251a3f94.tar.gz u-boot-imx-e3ddc646031551627c4eeae4598f8862251a3f94.tar.bz2 | |
i.MX28: Add function to adjust memory parameters
This function can be overridden at run-time and allows implementors
of new boards based on the i.MX28 chip to fine-tune the memory params.
It is possible to write into the dram_vals array because when the SPL
runs, it is located SRAM. Therefore the location is writable. There is
no possibility of these data to be read-only.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c b/arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c index 9fa5d29..e17a4d7 100644 --- a/arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c +++ b/arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c @@ -82,10 +82,18 @@ uint32_t dram_vals[] = { 0x00000000, 0x00010001 }; +void __mx28_adjust_memory_params(uint32_t *dram_vals) +{ +} +void mx28_adjust_memory_params(uint32_t *dram_vals) + __attribute__((weak, alias("__mx28_adjust_memory_params"))); + void init_m28_200mhz_ddr2(void) { int i; + mx28_adjust_memory_params(dram_vals); + for (i = 0; i < ARRAY_SIZE(dram_vals); i++) writel(dram_vals[i], MXS_DRAM_BASE + (4 * i)); } |