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author | Haavard Skinnemoen <hskinnemoen@atmel.com> | 2006-11-19 17:06:53 (GMT) |
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committer | Haavard Skinnemoen <hskinnemoen@atmel.com> | 2007-04-14 13:20:27 (GMT) |
commit | df548d3c3e2bbc40258713167859ffc2ce99a900 (patch) | |
tree | 63759a73724848ba192874aa552861e03faf1058 /board/atmel | |
parent | 03d1e1365796cd15d1726e8a51fd8b5be50b2fe9 (diff) | |
download | u-boot-df548d3c3e2bbc40258713167859ffc2ce99a900.tar.xz |
AVR32: Resource management rewrite
Rewrite the resource management code (i.e. I/O memory, clock gating,
gpio) so it doesn't depend on any global state. This is necessary
because this code is heavily used before relocation to RAM, so we
can't write to any global variables.
As an added bonus, this makes u-boot's memory footprint a bit smaller,
although some functionality has been left out; all clocks are enabled
all the time, and there's no checking for gpio line conflicts.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Diffstat (limited to 'board/atmel')
-rw-r--r-- | board/atmel/atstk1000/atstk1000.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/board/atmel/atstk1000/atstk1000.c b/board/atmel/atstk1000/atstk1000.c index 4d737d2..8210bc6 100644 --- a/board/atmel/atstk1000/atstk1000.c +++ b/board/atmel/atstk1000/atstk1000.c @@ -23,6 +23,8 @@ #include <asm/io.h> #include <asm/sdram.h> +#include <asm/arch/gpio.h> +#include <asm/arch/hmatrix2.h> DECLARE_GLOBAL_DATA_PTR; @@ -40,6 +42,17 @@ static const struct sdram_info sdram = { .txsr = 5, }; +int board_early_init_f(void) +{ + /* Set the SDRAM_ENABLE bit in the HEBI SFR */ + hmatrix2_writel(SFR4, 1 << 1); + + gpio_enable_ebi(); + gpio_enable_usart1(); + + return 0; +} + void board_init_memories(void) { gd->sdram_size = sdram_init(&sdram); |