add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/arch/xtensa/kernel/head.S
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@@ -59,10 +59,6 @@
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 	.align	4
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 	.literal_position
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-.Lstartup:
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-	.word	_startup
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-
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-	.align	4
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 _SetupOCD:
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 	/*
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 	 * Initialize WB, WS, and clear PS.EXCM (to allow loop instructions).
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@@ -99,12 +95,12 @@
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 1:
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 #endif
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 #endif
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-	.end	no-absolute-literals
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-	l32r	a0, .Lstartup
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+	movi	a0, _startup
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 	jx	a0
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 ENDPROC(_start)
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+	.end	no-absolute-literals
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 	__REF
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 	.literal_position
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@@ -197,7 +193,7 @@
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 	movi	a1, start_info
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 	l32i	a1, a1, 0
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-	movi	a2, (1 << PS_WOE_BIT) | LOCKLEVEL
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+	movi	a2, PS_WOE_MASK | LOCKLEVEL
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 					# WOE=1, INTLEVEL=LOCKLEVEL, UM=0
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 	wsr	a2, ps			# (enable reg-windows; progmode stack)
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 	rsync
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@@ -263,6 +259,13 @@
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 	isync
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 	___invalidate_icache_all a2 a3
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 	isync
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+
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+#ifdef CONFIG_XIP_KERNEL
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+	/* Setup bootstrap CPU stack in XIP kernel */
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+
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+	movi	a1, start_info
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+	l32i	a1, a1, 0
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+#endif
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 	movi	a6, 0
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 	xsr	a6, excsave1
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@@ -359,10 +362,10 @@
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  * DATA section
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  */
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-        .section ".data.init.refok"
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-        .align  4
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+	__REFDATA
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+	.align  4
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 ENTRY(start_info)
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-        .long   init_thread_union + KERNEL_STACK_SIZE
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+	.long	init_thread_union + KERNEL_STACK_SIZE
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 /*
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  * BSS section