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2023-11-20 2e7bd41e4e8ab3d1efdabd9e263a2f7fe79bff8c

 kernel/drivers/firmware/rockchip_sip.c
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@@ -291,17 +291,20 @@
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  */
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 #ifdef CONFIG_ARM64
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 #define SIP_UARTDBG_FN		SIP_UARTDBG_CFG64
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+#define SIP_FIQ_DBG_STACK_SIZE	IRQ_STACK_SIZE
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 #else
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 #define SIP_UARTDBG_FN		SIP_UARTDBG_CFG
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+#define SIP_FIQ_DBG_STACK_SIZE	SZ_8K
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+
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 static int firmware_64_32bit;
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 #endif
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 static int fiq_sip_enabled;
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 static int fiq_target_cpu;
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+static unsigned long fiq_stack_top;
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 static phys_addr_t ft_fiq_mem_phy;
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 static void __iomem *ft_fiq_mem_base;
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-static void (*sip_fiq_debugger_uart_irq_tf)(struct pt_regs *_pt_regs,
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-					    uint32_t cpu);
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+static sip_fiq_debugger_uart_irq_tf_cb_t sip_fiq_debugger_uart_irq_tf;
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 static struct pt_regs fiq_pt_regs;
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 int sip_fiq_debugger_is_enabled(void)
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@@ -388,7 +391,7 @@
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 static void sip_fiq_debugger_uart_irq_tf_cb(unsigned long sp_el1,
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 					    unsigned long offset,
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-					    uint32_t cpu)
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+					    unsigned long cpu)
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 {
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 	char *cpu_context;
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@@ -403,15 +406,30 @@
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 	__invoke_sip_fn_smc(SIP_UARTDBG_FN, 0, 0, UARTDBG_CFG_OSHDL_TO_OS);
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 }
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-int sip_fiq_debugger_uart_irq_tf_init(u32 irq_id, void *callback_fn)
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+int sip_fiq_debugger_uart_irq_tf_init(u32 irq_id, sip_fiq_debugger_uart_irq_tf_cb_t callback_fn)
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 {
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 	struct arm_smccc_res res;
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+	/* Alloc a page for fiq_debugger's stack */
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+	if (fiq_stack_top == 0) {
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+		fiq_stack_top = __get_free_pages(GFP_KERNEL | __GFP_ZERO,
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+						 get_order(SIP_FIQ_DBG_STACK_SIZE));
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+		if (fiq_stack_top) {
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+			fiq_stack_top += SIP_FIQ_DBG_STACK_SIZE;
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+		} else {
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+			pr_err("%s: alloc stack failed\n", __func__);
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+			return -ENOMEM;
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+		}
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+	}
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+
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 	/* init fiq debugger callback */
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 	sip_fiq_debugger_uart_irq_tf = callback_fn;
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-	res = __invoke_sip_fn_smc(SIP_UARTDBG_FN, irq_id,
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-				  (unsigned long)sip_fiq_debugger_uart_irq_tf_cb,
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-				  UARTDBG_CFG_INIT);
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+	arm_smccc_smc(SIP_UARTDBG_FN,
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+		      irq_id,
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+		      (unsigned long)sip_fiq_debugger_uart_irq_tf_cb,
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+		      UARTDBG_CFG_INIT,
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+		      fiq_stack_top, 0, 0, 0, &res);
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+
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 	if (IS_SIP_ERROR(res.a0)) {
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 		pr_err("%s error: %d\n", __func__, (int)res.a0);
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 		return res.a0;