diff options
Diffstat (limited to 'arch/arm/cpu/arm1136')
| -rw-r--r-- | arch/arm/cpu/arm1136/mx31/devices.c | 15 | ||||
| -rw-r--r-- | arch/arm/cpu/arm1136/mx31/generic.c | 15 | ||||
| -rw-r--r-- | arch/arm/cpu/arm1136/mx35/generic.c | 31 |
3 files changed, 59 insertions, 2 deletions
diff --git a/arch/arm/cpu/arm1136/mx31/devices.c b/arch/arm/cpu/arm1136/mx31/devices.c index 1e7d48f8fb..b42dac3fbe 100644 --- a/arch/arm/cpu/arm1136/mx31/devices.c +++ b/arch/arm/cpu/arm1136/mx31/devices.c @@ -38,7 +38,22 @@ void mx31_uart1_hw_init(void) } #endif +#ifdef CONFIG_SYS_MX31_UART2 +void mx31_uart2_hw_init(void) +{ + /* setup pins for UART2 */ + mx31_gpio_mux(MUX_RXD2__UART2_RXD_MUX); + mx31_gpio_mux(MUX_TXD2__UART2_TXD_MUX); + mx31_gpio_mux(MUX_RTS2__UART2_RTS_B); + mx31_gpio_mux(MUX_CTS2__UART2_CTS_B); +} +#endif + #ifdef CONFIG_MXC_SPI +/* + * Note: putting several spi setups here makes no sense as they may differ + * at board level (physical pin SS0 of CSPI2 may aswell be used as SS0 of CSPI3) + */ void mx31_spi2_hw_init(void) { /* SPI2 */ diff --git a/arch/arm/cpu/arm1136/mx31/generic.c b/arch/arm/cpu/arm1136/mx31/generic.c index 78df7b9261..4f27e250bd 100644 --- a/arch/arm/cpu/arm1136/mx31/generic.c +++ b/arch/arm/cpu/arm1136/mx31/generic.c @@ -27,6 +27,8 @@ #include <asm/io.h> #include <asm/arch/sys_proto.h> +#define IOMUXGPR (IOMUXC_BASE + 0x008) + static u32 mx31_decode_pll(u32 reg, u32 infreq) { u32 mfi = GET_PLL_MFI(reg); @@ -141,6 +143,19 @@ void mx31_set_pad(enum iomux_pins pin, u32 config) } +void mx31_set_gpr(enum iomux_gp_func gp, char en) +{ + u32 l; + + l = readl(IOMUXGPR); + if (en) + l |= gp; + else + l &= ~gp; + + writel(l, IOMUXGPR); +} + void mxc_setup_weimcs(int cs, const struct mxc_weimcs *weimcs) { struct mx31_weim *weim = (struct mx31_weim *) WEIM_BASE; diff --git a/arch/arm/cpu/arm1136/mx35/generic.c b/arch/arm/cpu/arm1136/mx35/generic.c index 1b9809b2f8..ac4838f034 100644 --- a/arch/arm/cpu/arm1136/mx35/generic.c +++ b/arch/arm/cpu/arm1136/mx35/generic.c @@ -422,12 +422,39 @@ U_BOOT_CMD( "" ); +static char *get_reset_cause(void) +{ + /* read RCSR register from CCM module */ + struct ccm_regs *ccm = + (struct ccm_regs *)IMX_CCM_BASE; + + u32 cause = readl(&ccm->rcsr) & 0x0F; + + switch (cause) { + case 0x0000: + return "POR"; + case 0x0002: + return "JTAG"; + case 0x0004: + return "RST"; + case 0x0008: + return "WDOG"; + default: + return "unknown reset"; + } +} + #if defined(CONFIG_DISPLAY_CPUINFO) int print_cpuinfo(void) { - printf("CPU: Freescale i.MX35 at %d MHz\n", + u32 srev = get_cpu_rev(); + + printf("CPU: Freescale i.MX35 rev %d.%d at %d MHz.\n", + (srev & 0xF0) >> 4, (srev & 0x0F), get_mcu_main_clk() / 1000000); - /* mxc_dump_clocks(); */ + + printf("Reset cause: %s\n", get_reset_cause()); + return 0; } #endif |
