[RFC 1/7] ARM: vf610: add low level debug support for !MMU
From: stefan@agner.ch (Stefan Agner)
Date: 2014-10-12 18:13:55
Also in:
linux-devicetree
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Possibly related (same subject, not in this thread)
- 2014-10-13 · Re: [RFC 1/7] ARM: vf610: add low level debug support for !MMU · Stefan Agner <hidden>
- 2014-10-12 · Re: [RFC 1/7] ARM: vf610: add low level debug support for !MMU · Arnd Bergmann <hidden>
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(+)
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
--
2.1.2