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| author | Vincent Palatin <vpalatin@chromium.org> | 2011-12-07 18:58:43 +0000 |
|---|---|---|
| committer | Vincent Palatin <vpalatin@chromium.org> | 2011-12-07 19:10:02 +0000 |
| commit | e24fa592d2a215d8ae67917c1d89e68cdf847a03 (patch) | |
| tree | 47fbe4c55e7f4089cad7d619eded337da3bae999 /board/bds/board.c | |
| parent | 6396911897e4cd40f52636d710cee2865acf15e3 (diff) | |
| download | chrome-ec-e24fa592d2a215d8ae67917c1d89e68cdf847a03.tar.gz | |
Initial sources import 3/3
source files mainly done by Vincent.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Change-Id: Ic2d1becd400c9b4b4a14d4a243af1bdf77d9c1e2
Diffstat (limited to 'board/bds/board.c')
| -rw-r--r-- | board/bds/board.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/board/bds/board.c b/board/bds/board.c new file mode 100644 index 0000000000..88d528bf51 --- /dev/null +++ b/board/bds/board.c @@ -0,0 +1,63 @@ +/* Stellaris EKB-LM4F-EAC pins multiplexing */ + +#include "board.h" +#include "registers.h" +#include "util.h" + +void configure_board(void) +{ + /* Enable all of the GPIO modules : GPIOA to GPIOQ */ + LM4_SYSTEM_RCGCGPIO = 0x7fff; + + /* GPIOA muxing : + * pins 0/1 : UART0 = function 1 + * pins 2/3/4/5 : SSI0 = function 2 + * pin 6 : GPIO = function 0 (SD card CS -- open drain) + * pin 7 : GPIO = function 0 (user LED) + */ + LM4_GPIO_PCTL(A) = 0x00222211; + LM4_GPIO_AFSEL(A) = 0x3f; + LM4_GPIO_DEN(A) = 0xff; + LM4_GPIO_PDR(A) = 0x00; + LM4_GPIO_PUR(A) = 0x3c; + LM4_GPIO_DIR(A) = 0xc0; + LM4_GPIO_ODR(A) = 0x40; + LM4_GPIO_DR2R(A) = 0xc3; + LM4_GPIO_DR8R(A) = 0x3c; + LM4_GPIO_DATA_BITS(A, 0x100) = 0x40; + LM4_GPIO_DATA_BITS(A, 0x200) = 0; + + /* GPIOB muxing + * pin 0 : GPIO = function 0 (USB ID) + * pin 1 : USB digital (VBus sense) + */ + LM4_GPIO_DEN(B) |= 0x01; + LM4_GPIO_AFSEL(B)|= 0x01; + + /* GPIOC muxing + * pins 0/1/2/3 : JTAG (default config) + * pin 4 : GPIO = function 0 (OLED +15v power enable) + * pin 6 : USB digital (USB power enable) + * pin 7 : USB digital (USB current overflow) + */ + LM4_GPIO_PCTL(C) = 0x88001111; + LM4_GPIO_AFSEL(C) = 0xcf; + LM4_GPIO_DEN(C) = 0xdf; + LM4_GPIO_DIR(C) = 0x10; + LM4_GPIO_DATA_BITS(C, 0x40) = 0; + + /* GPIOD muxing + * pins 0/1/2/3/4 : GPIO = function 0 (buttons up,down,left,right,select) + * pin 5 : GPIO = function 0 (OLED d/Cn) + * pin 6 : GPIO = function 0 (OLED reset) + */ + LM4_GPIO_DEN(D) = 0x7f; + LM4_GPIO_DIR(D) = 0x60; + LM4_GPIO_PUR(D) = 0x1f; + + /* GPIOE muxing + * pin 3 : Analog function : AIN0 ADC (potentiometer) + * pin 6/7: USB analog + */ + LM4_GPIO_AMSEL(E) = 0x8; +} |