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imx: mx6: implement functions to boot auxiliary core

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Implement arch_auxiliary_core_up and arch_auxiliary_core_check_up.

arch_auxiliary_core_check_up is used to check whether M4 is running
or not. arch_auxiliary_core_up is to boot M4 core, the m4 core will
use the pc and stack which is set in arch_auxiliary_core_up to set R15
and R13 register and boot.

Signed-off-by: Ye.Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan
2016-01-28 16:55:05 +08:00
committed by Stefano Babic
parent 6f6058bfd8
commit 0623d375cf
2 changed files with 43 additions and 0 deletions
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5
arch/arm/include/asm/arch-mx6/imx-regs.h
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@@ -438,6 +438,11 @@ struct src {
u32 gpr10;
};
#define SRC_SCR_M4_ENABLE_OFFSET 22
#define SRC_SCR_M4_ENABLE_MASK (1 << 22)
#define SRC_SCR_M4C_NON_SCLR_RST_OFFSET 4
#define SRC_SCR_M4C_NON_SCLR_RST_MASK (1 << 4)
/* GPR1 bitfields */
#define IOMUXC_GPR1_APP_CLK_REQ_N BIT(30)
#define IOMUXC_GPR1_PCIE_EXIT_L1 BIT(28)