From b9eb3fdf2f545626525b85953d322b2f8d67d319 Mon Sep 17 00:00:00 2001 From: Stefano Babic Date: Tue, 29 Jun 2010 11:48:24 +0200 Subject: MX31: Add support to update FPGA bitstream The patch adds the possibility to update the QONG FPGA (a Lattice XP2-5E) with u-boot using some GPIOs to drive the JTAG interface. Signed-off-by: Stefano Babic --- board/davedenx/qong/qong.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'board/davedenx/qong/qong.c') diff --git a/board/davedenx/qong/qong.c b/board/davedenx/qong/qong.c index 9abc29c5f7..efeb0bb6bc 100644 --- a/board/davedenx/qong/qong.c +++ b/board/davedenx/qong/qong.c @@ -73,6 +73,15 @@ int board_early_init_f (void) /* set interrupt pin as input */ mxc_gpio_direction(QONG_FPGA_IRQ_PIN, MXC_GPIO_DIRECTION_IN); + /* FPGA JTAG Interface */ + mx31_gpio_mux(IOMUX_MODE(MUX_CTL_SFS6, MUX_CTL_GPIO)); + mx31_gpio_mux(IOMUX_MODE(MUX_CTL_SCK6, MUX_CTL_GPIO)); + mx31_gpio_mux(IOMUX_MODE(MUX_CTL_CAPTURE, MUX_CTL_GPIO)); + mx31_gpio_mux(IOMUX_MODE(MUX_CTL_COMPARE, MUX_CTL_GPIO)); + mxc_gpio_direction(QONG_FPGA_TCK_PIN, MXC_GPIO_DIRECTION_OUT); + mxc_gpio_direction(QONG_FPGA_TMS_PIN, MXC_GPIO_DIRECTION_OUT); + mxc_gpio_direction(QONG_FPGA_TDI_PIN, MXC_GPIO_DIRECTION_OUT); + mxc_gpio_direction(QONG_FPGA_TDO_PIN, MXC_GPIO_DIRECTION_IN); #endif /* setup pins for UART1 */ @@ -146,6 +155,8 @@ int board_init (void) gd->bd->bi_arch_number = MACH_TYPE_QONG; gd->bd->bi_boot_params = (0x80000100); /* adress of boot parameters */ + qong_fpga_init(); + return 0; } -- cgit v1.2.3