diff options
| author | Anson Huang <b20788@freescale.com> | 2016-10-27 15:33:59 +0300 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-23 16:42:26 +0300 |
| commit | bf7b36140309606dff10fed299ad9aca246099cb (patch) | |
| tree | 1908dfdc3f92fc485a7ff2dd56606323d23c15d3 /arch/arm/mach-imx/headsmp.S | |
| parent | 66c0e029532448a456017a59350f30d65e61d919 (diff) | |
MLK-11265-7 ARM: imx: add smp support for imx7d
Add SMP support for i.MX7D, including CPU hotplug support.
Signed-off-by: Anson Huang <b20788@freescale.com>
Diffstat (limited to 'arch/arm/mach-imx/headsmp.S')
| -rw-r--r-- | arch/arm/mach-imx/headsmp.S | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/headsmp.S b/arch/arm/mach-imx/headsmp.S index 6c28d28b3c64..5d6a5e2fe9ee 100644 --- a/arch/arm/mach-imx/headsmp.S +++ b/arch/arm/mach-imx/headsmp.S @@ -1,5 +1,5 @@ /* - * Copyright 2011 Freescale Semiconductor, Inc. + * Copyright 2011-2015 Freescale Semiconductor, Inc. * Copyright 2011 Linaro Ltd. * * The code contained herein is licensed under the GNU General Public @@ -27,6 +27,17 @@ diag_reg_offset: ENTRY(v7_secondary_startup) ARM_BE8(setend be) @ go BE8 if entered LE + mrc p15, 0, r0, c0, c0, 0 + ldr r1, =0xf00 + orr r1, r1, #0xff + mov r0, r0, lsr #4 + and r0, r0, r1 + /* 0xc07 is cortex A7's ID */ + ldr r1, =0xc00 + orr r1, r1, #0x7 + cmp r0, r1 + beq secondary_startup + set_diag_reg b secondary_startup ENDPROC(v7_secondary_startup) |