From 5d8b0a9fb31ff5d595aab08165ce686dd1a65dfc Mon Sep 17 00:00:00 2001 From: Alexandru Gagniuc Date: Tue, 31 Dec 2013 00:57:30 -0500 Subject: cubieboard: Initialize memory in bootblock Even though the Allwinner A10 is limited to a 24KiB bootblock, the memory initialization takes only about 3KiB and leaves enough room for an MMC or NAND driver, so init the memory early on. The advantage is that we can eliminate complicated logistics of where to cache CBFS and where to load the ramstage in SRAM. Change-Id: Id549552ed509434e831db60deaef28e04d62417f Signed-off-by: Alexandru Gagniuc Reviewed-on: http://review.coreboot.org/4630 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks --- src/mainboard/cubietech/cubieboard/bootblock.c | 42 ++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) (limited to 'src/mainboard/cubietech') diff --git a/src/mainboard/cubietech/cubieboard/bootblock.c b/src/mainboard/cubietech/cubieboard/bootblock.c index 8899160d45..2e5929c019 100644 --- a/src/mainboard/cubietech/cubieboard/bootblock.c +++ b/src/mainboard/cubietech/cubieboard/bootblock.c @@ -9,8 +9,10 @@ #include #include #include +#include #include #include +#include #define CPU_AHB_APB0_DEFAULT \ CPU_CLK_SRC_OSC24M \ @@ -76,10 +78,50 @@ static void cubieboard_enable_uart(void) a1x_periph_clock_enable(A1X_CLKEN_UART0); } +static void cubieboard_raminit(void) +{ + struct dram_para dram_para = { + .clock = 480, + .type = 3, + .rank_num = 1, + .density = 4096, + .io_width = 16, + .bus_width = 32, + .cas = 6, + .zq = 123, + .odt_en = 0, + .size = 1024, + .tpr0 = 0x30926692, + .tpr1 = 0x1090, + .tpr2 = 0x1a0c8, + .tpr3 = 0, + .tpr4 = 0, + .tpr5 = 0, + .emr1 = 0, + .emr2 = 0, + .emr3 = 0, + }; + + dramc_init(&dram_para); + + /* FIXME: ram_check does not compile for ARM, + * and we didn't init console yet + */ + ////void *const test_base = (void *)A1X_DRAM_BASE; + ////ram_check((u32)test_base, (u32)test_base + 0x1000); +} + void bootblock_mainboard_init(void); void bootblock_mainboard_init(void) { + /* A10 Timer init uses the 24MHz clock, not PLLs, so we can init it very + * early on to get udelay, which is used almost everywhere else. + */ + init_timer(); + cubieboard_setup_clocks(); cubieboard_setup_gpios(); cubieboard_enable_uart(); + + cubieboard_raminit(); } -- cgit v1.2.3