diff options
| author | Stefan Agner <stefan@agner.ch> | 2014-03-05 23:07:48 +0100 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@freescale.com> | 2014-04-30 07:40:27 +0200 |
| commit | cfdb7d564c03a06e00f76a5e9b3929f802c1040b (patch) | |
| tree | 9c7d46bcf05b660e4c0cda1fc10174147f5884a4 /arch/arm/include | |
| parent | ARM: i.MX: mx21ads: Replace direct handling of peripheral bits with GPIOs (diff) | |
| download | linux-cfdb7d564c03a06e00f76a5e9b3929f802c1040b.tar.xz linux-cfdb7d564c03a06e00f76a5e9b3929f802c1040b.zip | |
ARM: vf610: add UART choice for low-level debug
Add choice for low-level debug UART. Similar to i.MX6, there is a
numeric configuration, valid choices are 0 to 3.
Note that the kernel assumes that the boot loader initialized clock
properly.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/debug/vf.S | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/arm/include/debug/vf.S b/arch/arm/include/debug/vf.S index ba12cc44b2cb..b88933849a17 100644 --- a/arch/arm/include/debug/vf.S +++ b/arch/arm/include/debug/vf.S @@ -7,9 +7,20 @@ * */ +#define VF_UART0_BASE_ADDR 0x40027000 +#define VF_UART1_BASE_ADDR 0x40028000 +#define VF_UART2_BASE_ADDR 0x40029000 +#define VF_UART3_BASE_ADDR 0x4002a000 +#define VF_UART_BASE_ADDR(n) VF_UART##n##_BASE_ADDR +#define VF_UART_BASE(n) VF_UART_BASE_ADDR(n) +#define VF_UART_PHYSICAL_BASE VF_UART_BASE(CONFIG_DEBUG_VF_UART_PORT) + +#define VF_UART_VIRTUAL_BASE 0xfe000000 + .macro addruart, rp, rv, tmp - ldr \rp, =0x40028000 @ physical - ldr \rv, =0xfe028000 @ virtual + ldr \rp, =VF_UART_PHYSICAL_BASE @ physical + and \rv, \rp, #0xffffff @ offset within 16MB section + add \rv, \rv, #VF_UART_VIRTUAL_BASE .endm .macro senduart, rd, rx |