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firmware: rockchip: use 'nsec_ctx->und_lr' to deliver fiq break point's PC

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'nsec_ctx->mon_lr' is not the fiq break point's PC, because it will
be override as 'sip_fiq_debugger_uart_irq_tf_cb' for optee-os to
jump to fiq_debugger handler. As 'nsec_ctx->und_lr' is not used for
kernel, optee-os uses it to deliver fiq break point's PC.

Change-Id: I5a831638e8228766d03d92674e3e29facdd116f8
Signed-off-by: chenjh <chenjh@rock-chips.com>
This commit is contained in:
chenjh 2017-05-15 10:02:31 +08:00 committed by Huang, Tao
parent 3ea271934d
commit 29e959968f
1 changed files with 11 additions and 1 deletions
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12
drivers/firmware/rockchip_sip.c
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@ -172,8 +172,18 @@ static struct pt_regs sip_fiq_debugger_get_pt_regs(void *reg_base,
fiq_pt_regs.ARM_ip = nsec_ctx->r12;
fiq_pt_regs.ARM_sp = nsec_ctx->svc_sp;
fiq_pt_regs.ARM_lr = nsec_ctx->svc_lr;
fiq_pt_regs.ARM_pc = nsec_ctx->mon_lr;
fiq_pt_regs.ARM_cpsr = nsec_ctx->mon_spsr;
/*
* 'nsec_ctx->mon_lr' is not the fiq break point's PC, because it will
* be override as 'psci_fiq_debugger_uart_irq_tf_cb' for optee-os to
* jump to fiq_debugger handler.
*
* As 'nsec_ctx->und_lr' is not used for kernel, so optee-os uses it to
* deliver fiq break point's PC.
*
*/
fiq_pt_regs.ARM_pc = nsec_ctx->und_lr;
#endif
return fiq_pt_regs;