diff options
| author | Tom Rini <trini@ti.com> | 2014-05-21 12:57:21 -0400 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-06-06 17:46:14 -0400 |
| commit | 87acf194a298f65a40c659036a5e413613d458e6 (patch) | |
| tree | 0e6d0ca73c9252ec14a4e755bc4389016d7af07a /arch/arm/cpu/armv7/am33xx | |
| parent | ce3cc8ecf52f798cc980a2c49bdc5cbca6b3be29 (diff) | |
| download | blackbird-obmc-uboot-87acf194a298f65a40c659036a5e413613d458e6.tar.gz blackbird-obmc-uboot-87acf194a298f65a40c659036a5e413613d458e6.zip | |
arm:am33xx: Make dram_init call sdram_init() in some contexts
We have two contexts for booting these platforms. One is SPL which is
roughly: reset, cpu_init_crit, lowlevel_init, s_init, sdram_init, _main,
board_init_f from SPL, ... then U-Boot loads. The other is a
memory-mapped XIP case (NOR or QSPI) where we do not run an SPL. In
this case we go, roughly: reset, cpu_init_crit, lowlevel_init, s_init,
_main, regular board_init_f.
In the first case s_init will set a valid gd and then be able to call
sdram_init which in many cases will need i2c (which needs a valid gd for
gd->cur_i2c_bus). In this second case we must (and are able to and
should) defer sdram_init() into dram_init() called by board_init_f as gd
will have been set in _main and cleared in board_init_f.
Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'arch/arm/cpu/armv7/am33xx')
| -rw-r--r-- | arch/arm/cpu/armv7/am33xx/board.c | 2 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/am33xx/emif4.c | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/am33xx/board.c b/arch/arm/cpu/armv7/am33xx/board.c index e5c922af8a..9a69b6ccfa 100644 --- a/arch/arm/cpu/armv7/am33xx/board.c +++ b/arch/arm/cpu/armv7/am33xx/board.c @@ -238,7 +238,9 @@ void s_init(void) /* Enable RTC32K clock */ rtc32k_enable(); #endif +#ifdef CONFIG_SPL_BUILD sdram_init(); +#endif } #endif diff --git a/arch/arm/cpu/armv7/am33xx/emif4.c b/arch/arm/cpu/armv7/am33xx/emif4.c index 2c67c322ca..a7a3e88cd7 100644 --- a/arch/arm/cpu/armv7/am33xx/emif4.c +++ b/arch/arm/cpu/armv7/am33xx/emif4.c @@ -21,6 +21,10 @@ DECLARE_GLOBAL_DATA_PTR; int dram_init(void) { +#ifndef CONFIG_SKIP_LOWLEVEL_INIT + sdram_init(); +#endif + /* dram_init must store complete ramsize in gd->ram_size */ gd->ram_size = get_ram_size( (void *)CONFIG_SYS_SDRAM_BASE, |
