diff options
Diffstat (limited to 'arch/arm/cpu/armv7')
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index db6eabf..a34675c 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -567,3 +567,41 @@ void imx_setup_hdmi(void) writel(reg, &mxc_ccm->chsccdr); } #endif + +#ifdef CONFIG_IMX_BOOTAUX +int arch_auxiliary_core_up(u32 core_id, u32 boot_private_data) +{ + struct src *src_reg; + u32 stack, pc; + + if (!boot_private_data) + return -EINVAL; + + stack = *(u32 *)boot_private_data; + pc = *(u32 *)(boot_private_data + 4); + + /* Set the stack and pc to M4 bootROM */ + writel(stack, M4_BOOTROM_BASE_ADDR); + writel(pc, M4_BOOTROM_BASE_ADDR + 4); + + /* Enable M4 */ + src_reg = (struct src *)SRC_BASE_ADDR; + clrsetbits_le32(&src_reg->scr, SRC_SCR_M4C_NON_SCLR_RST_MASK, + SRC_SCR_M4_ENABLE_MASK); + + return 0; +} + +int arch_auxiliary_core_check_up(u32 core_id) +{ + struct src *src_reg = (struct src *)SRC_BASE_ADDR; + unsigned val; + + val = readl(&src_reg->scr); + + if (val & SRC_SCR_M4C_NON_SCLR_RST_MASK) + return 0; /* assert in reset */ + + return 1; +} +#endif |