diff options
Diffstat (limited to 'cpu/arm1136')
| -rw-r--r-- | cpu/arm1136/mx31/Makefile | 1 | ||||
| -rw-r--r-- | cpu/arm1136/mx31/devices.c | 56 | ||||
| -rw-r--r-- | cpu/arm1136/start.S | 33 |
3 files changed, 76 insertions, 14 deletions
diff --git a/cpu/arm1136/mx31/Makefile b/cpu/arm1136/mx31/Makefile index 1e49e8d..c8e18f7 100644 --- a/cpu/arm1136/mx31/Makefile +++ b/cpu/arm1136/mx31/Makefile @@ -27,6 +27,7 @@ LIB = $(obj)lib$(SOC).a COBJS += generic.o COBJS += timer.o +COBJS += devices.o SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) diff --git a/cpu/arm1136/mx31/devices.c b/cpu/arm1136/mx31/devices.c new file mode 100644 index 0000000..1f4ca7e --- /dev/null +++ b/cpu/arm1136/mx31/devices.c @@ -0,0 +1,56 @@ +/* + * + * (C) Copyright 2009 Magnus Lilja <lilja.magnus@gmail.com> + * + * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/arch/mx31-regs.h> +#include <asm/arch/mx31.h> + +#ifdef CONFIG_SYS_MX31_UART1 +void mx31_uart1_hw_init(void) +{ + /* setup pins for UART1 */ + mx31_gpio_mux(MUX_RXD1__UART1_RXD_MUX); + mx31_gpio_mux(MUX_TXD1__UART1_TXD_MUX); + mx31_gpio_mux(MUX_RTS1__UART1_RTS_B); + mx31_gpio_mux(MUX_CTS1__UART1_CTS_B); +} +#endif + +#ifdef CONFIG_MXC_SPI +void mx31_spi2_hw_init(void) +{ + /* SPI2 */ + mx31_gpio_mux(MUX_CSPI2_SS2__CSPI2_SS2_B); + mx31_gpio_mux(MUX_CSPI2_SCLK__CSPI2_CLK); + mx31_gpio_mux(MUX_CSPI2_SPI_RDY__CSPI2_DATAREADY_B); + mx31_gpio_mux(MUX_CSPI2_MOSI__CSPI2_MOSI); + mx31_gpio_mux(MUX_CSPI2_MISO__CSPI2_MISO); + mx31_gpio_mux(MUX_CSPI2_SS0__CSPI2_SS0_B); + mx31_gpio_mux(MUX_CSPI2_SS1__CSPI2_SS1_B); + + /* start SPI2 clock */ + __REG(CCM_CGR2) = __REG(CCM_CGR2) | (3 << 4); +} +#endif diff --git a/cpu/arm1136/start.S b/cpu/arm1136/start.S index 999b184..957f438 100644 --- a/cpu/arm1136/start.S +++ b/cpu/arm1136/start.S @@ -32,7 +32,7 @@ #include <version.h> .globl _start _start: b reset -#ifdef CONFIG_ONENAND_IPL +#ifdef CONFIG_PRELOADER ldr pc, _hang ldr pc, _hang ldr pc, _hang @@ -67,7 +67,7 @@ _not_used: .word not_used _irq: .word irq _fiq: .word fiq _pad: .word 0x12345678 /* now 16*4=64 */ -#endif /* CONFIG_ONENAND_IPL */ +#endif /* CONFIG_PRELOADER */ .global _end_vect _end_vect: @@ -156,9 +156,9 @@ relocate: /* relocate U-Boot to RAM */ adr r0, _start /* r0 <- current position of code */ ldr r1, _TEXT_BASE /* test if we run from flash or RAM */ cmp r0, r1 /* don't reloc during debug */ -#ifndef CONFIG_ONENAND_IPL +#ifndef CONFIG_PRELOADER beq stack_setup -#endif /* CONFIG_ONENAND_IPL */ +#endif /* CONFIG_PRELOADER */ ldr r2, _armboot_start ldr r3, _bss_start @@ -175,7 +175,7 @@ copy_loop: /* Set up the stack */ stack_setup: ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */ -#ifdef CONFIG_ONENAND_IPL +#ifdef CONFIG_PRELOADER sub sp, r0, #128 /* leave 32 words for abort-stack */ #else sub r0, r0, #CONFIG_SYS_MALLOC_LEN /* malloc area */ @@ -184,14 +184,14 @@ stack_setup: sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ) #endif sub sp, r0, #12 /* leave 3 words for abort-stack */ -#endif /* CONFIG_ONENAND_IPL */ +#endif /* CONFIG_PRELOADER */ clear_bss: ldr r0, _bss_start /* find start of bss segment */ ldr r1, _bss_end /* stop here */ mov r2, #0x00000000 /* clear */ -#ifndef CONFIG_ONENAND_IPL +#ifndef CONFIG_PRELOADER clbss_l:str r2, [r0] /* clear loop... */ add r0, r0, #4 cmp r0, r1 @@ -200,12 +200,15 @@ clbss_l:str r2, [r0] /* clear loop... */ ldr pc, _start_armboot +#ifdef CONFIG_NAND_SPL +_start_armboot: .word nand_boot +#else #ifdef CONFIG_ONENAND_IPL _start_armboot: .word start_oneboot #else _start_armboot: .word start_armboot -#endif - +#endif /* CONFIG_ONENAND_IPL */ +#endif /* CONFIG_NAND_SPL */ /* ************************************************************************* @@ -217,6 +220,7 @@ _start_armboot: .word start_armboot * ************************************************************************* */ +#ifndef CONFIG_SKIP_LOWLEVEL_INIT cpu_init_crit: /* * flush v4 I/D caches @@ -243,8 +247,9 @@ cpu_init_crit: bl lowlevel_init /* go setup pll,mux,memory */ mov lr, ip /* restore link */ mov pc, lr /* back to my caller */ +#endif /* CONFIG_SKIP_LOWLEVEL_INIT */ -#ifndef CONFIG_ONENAND_IPL +#ifndef CONFIG_PRELOADER /* ************************************************************************* * @@ -357,17 +362,17 @@ cpu_init_crit: .macro get_fiq_stack @ setup FIQ stack ldr sp, FIQ_STACK_START .endm -#endif /* CONFIG_ONENAND_IPL */ +#endif /* CONFIG_PRELOADER */ /* * exception handlers */ -#ifdef CONFIG_ONENAND_IPL +#ifdef CONFIG_PRELOADER .align 5 do_hang: ldr sp, _TEXT_BASE /* use 32 words about stack */ bl hang /* hang and never return */ -#else /* !CONFIG_ONENAND IPL */ +#else /* !CONFIG_PRELOADER */ .align 5 undefined_instruction: get_bad_stack @@ -435,4 +440,4 @@ fiq: arm1136_cache_flush: mcr p15, 0, r1, c7, c5, 0 @ invalidate I cache mov pc, lr @ back to caller -#endif /* CONFIG_ONENAND_IPL */ +#endif /* CONFIG_PRELOADER */ |