diff options
author | Pawel Moll <pawel.moll@arm.com> | 2011-12-09 18:47:39 (GMT) |
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committer | Pawel Moll <pawel.moll@arm.com> | 2012-02-24 09:18:20 (GMT) |
commit | 6a3719562b69ffdfc36e829e19b35fda6ab19ca6 (patch) | |
tree | 0eb75a57e5f7b54d51d14c315f15cbc1433e2ee7 /arch/arm/mach-vexpress/include | |
parent | 8deed1786a6479d0ccda51226582920ab1d6976c (diff) | |
download | linux-6a3719562b69ffdfc36e829e19b35fda6ab19ca6.tar.xz |
ARM: vexpress: Motherboard RS1 memory map support
This patch adds support for RS1 memory map based Versatile Express
motherboard.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Diffstat (limited to 'arch/arm/mach-vexpress/include')
-rw-r--r-- | arch/arm/mach-vexpress/include/mach/debug-macro.S | 30 | ||||
-rw-r--r-- | arch/arm/mach-vexpress/include/mach/uncompress.h | 22 |
2 files changed, 47 insertions, 5 deletions
diff --git a/arch/arm/mach-vexpress/include/mach/debug-macro.S b/arch/arm/mach-vexpress/include/mach/debug-macro.S index fd9e6c7..fa82247 100644 --- a/arch/arm/mach-vexpress/include/mach/debug-macro.S +++ b/arch/arm/mach-vexpress/include/mach/debug-macro.S @@ -10,12 +10,34 @@ * published by the Free Software Foundation. */ -#define DEBUG_LL_UART_OFFSET 0x00009000 +#define DEBUG_LL_PHYS_BASE 0x10000000 +#define DEBUG_LL_UART_OFFSET 0x00009000 + +#define DEBUG_LL_PHYS_BASE_RS1 0x1c000000 +#define DEBUG_LL_UART_OFFSET_RS1 0x00090000 + +#define DEBUG_LL_VIRT_BASE 0xf8000000 .macro addruart,rp,rv,tmp - mov \rp, #DEBUG_LL_UART_OFFSET - orr \rv, \rp, #0xf8000000 @ virtual base - orr \rp, \rp, #0x10000000 @ physical base + + @ Make an educated guess regarding the memory map: + @ - the original A9 core tile, which has MPCore peripherals + @ located at 0x1e000000, should use UART at 0x10009000 + @ - all other (RS1 complaint) tiles use UART mapped + @ at 0x1c090000 + mrc p15, 4, \tmp, c15, c0, 0 + cmp \tmp, #0x1e000000 + + @ Original memory map + moveq \rp, #DEBUG_LL_UART_OFFSET + orreq \rv, \rp, #DEBUG_LL_VIRT_BASE + orreq \rp, \rp, #DEBUG_LL_PHYS_BASE + + @ RS1 memory map + movne \rp, #DEBUG_LL_UART_OFFSET_RS1 + orrne \rv, \rp, #DEBUG_LL_VIRT_BASE + orrne \rp, \rp, #DEBUG_LL_PHYS_BASE_RS1 + .endm #include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/mach-vexpress/include/mach/uncompress.h b/arch/arm/mach-vexpress/include/mach/uncompress.h index 7972c57..7dab559 100644 --- a/arch/arm/mach-vexpress/include/mach/uncompress.h +++ b/arch/arm/mach-vexpress/include/mach/uncompress.h @@ -22,7 +22,27 @@ #define AMBA_UART_CR(base) (*(volatile unsigned char *)((base) + 0x30)) #define AMBA_UART_FR(base) (*(volatile unsigned char *)((base) + 0x18)) -#define get_uart_base() (0x10000000 + 0x00009000) +#define UART_BASE 0x10009000 +#define UART_BASE_RS1 0x1c090000 + +static unsigned long get_uart_base(void) +{ + unsigned long mpcore_periph; + + /* + * Make an educated guess regarding the memory map: + * - the original A9 core tile, which has MPCore peripherals + * located at 0x1e000000, should use UART at 0x10009000 + * - all other (RS1 complaint) tiles use UART mapped + * at 0x1c090000 + */ + asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (mpcore_periph)); + + if (mpcore_periph == 0x1e000000) + return UART_BASE; + else + return UART_BASE_RS1; +} /* * This does not append a newline |