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[RFC,1/7] ARM: vf610: add low level debug support for !MMU

Message ID 331b5f06d72890ac348adcd8cce616db576eb10e.1413136383.git.stefan@agner.ch (mailing list archive)
State New, archived
Headers show

Commit Message

Stefan Agner Oct. 12, 2014, 6:13 p.m. UTC 
Add support for !MMU low level debug required for the secondary
Cortex-M4 core in Vybrid.

Signed-off-by: Stefan Agner <stefan@agner.ch>
---
 arch/arm/include/debug/vf.S | 10 ++++++++++
 1 file changed, 10 insertions(+)
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Patch

diff --git a/arch/arm/include/debug/vf.S b/arch/arm/include/debug/vf.S
index b889338..63c7ef7 100644
--- a/arch/arm/include/debug/vf.S
+++ b/arch/arm/include/debug/vf.S
@@ -17,12 +17,22 @@ 
 
 #define VF_UART_VIRTUAL_BASE	0xfe000000
 
+#ifdef CONFIG_MMU
+
 	.macro	addruart, rp, rv, tmp
 	ldr	\rp, =VF_UART_PHYSICAL_BASE 	@ physical
 	and	\rv, \rp, #0xffffff		@ offset within 16MB section
 	add	\rv, \rv, #VF_UART_VIRTUAL_BASE
 	.endm
 
+#else /* !CONFIG_MMU */
+
+	.macro	addruart, rx, tmp
+	ldr	\rx, =(VF_UART_PHYSICAL_BASE)	@ physical
+	.endm
+
+#endif /* CONFIG_MMU */
+
 	.macro	senduart, rd, rx
 	strb	\rd, [\rx, #0x7]	@ Data Register
 	.endm