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authorAfzal Mohammed <afzal@ti.com>2012-05-10 14:23:01 +0530
committerTony Lindgren <tony@atomide.com>2012-06-05 00:15:45 -0700
commitd0a9001dce0ea24751b1f6336f2881ac906cabbb (patch)
tree7f7efc038f5c4d0e43bbd4502cb26e241bcd18bc /arch/arm/mach-omap2/include
parentf8f5701bdaf9134b1f90e5044a82c66324d2073f (diff)
downloadblackbird-op-linux-d0a9001dce0ea24751b1f6336f2881ac906cabbb.tar.gz
blackbird-op-linux-d0a9001dce0ea24751b1f6336f2881ac906cabbb.zip
ARM: OMAP2+: am33xx: Add low level debugging support
Add support for low level debugging on AM335X EVM (AM33XX family). Currently only support for UART1 console, which is used on AM335X EVM is added. Signed-off-by: Afzal Mohammed <afzal@ti.com> Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/include')
-rw-r--r--arch/arm/mach-omap2/include/mach/debug-macro.S17
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/include/mach/debug-macro.S b/arch/arm/mach-omap2/include/mach/debug-macro.S
index cdfc2a1f0e75..d7f844a99a7b 100644
--- a/arch/arm/mach-omap2/include/mach/debug-macro.S
+++ b/arch/arm/mach-omap2/include/mach/debug-macro.S
@@ -72,6 +72,8 @@ omap_uart_lsr: .word 0
beq 82f @ configure UART2
cmp \rp, #TI81XXUART3 @ ti81Xx UART offsets different
beq 83f @ configure UART3
+ cmp \rp, #AM33XXUART1 @ AM33XX UART offsets different
+ beq 84f @ configure UART1
cmp \rp, #ZOOM_UART @ only on zoom2/3
beq 95f @ configure ZOOM_UART
@@ -100,7 +102,9 @@ omap_uart_lsr: .word 0
b 98f
83: mov \rp, #UART_OFFSET(TI81XX_UART3_BASE)
b 98f
-
+84: ldr \rp, =AM33XX_UART1_BASE
+ and \rp, \rp, #0x00ffffff
+ b 97f
95: ldr \rp, =ZOOM_UART_BASE
str \rp, [\tmp, #0] @ omap_uart_phys
ldr \rp, =ZOOM_UART_VIRT
@@ -109,6 +113,17 @@ omap_uart_lsr: .word 0
str \rp, [\tmp, #8] @ omap_uart_lsr
b 10b
+ /* AM33XX: Store both phys and virt address for the uart */
+97: add \rp, \rp, #0x44000000 @ phys base
+ str \rp, [\tmp, #0] @ omap_uart_phys
+ sub \rp, \rp, #0x44000000 @ phys base
+ add \rp, \rp, #0xf9000000 @ virt base
+ str \rp, [\tmp, #4] @ omap_uart_virt
+ mov \rp, #(UART_LSR << OMAP_PORT_SHIFT)
+ str \rp, [\tmp, #8] @ omap_uart_lsr
+
+ b 10b
+
/* Store both phys and virt address for the uart */
98: add \rp, \rp, #0x48000000 @ phys base
str \rp, [\tmp, #0] @ omap_uart_phys
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