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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-27 16:47:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-27 16:47:35 -0700 |
| commit | 66f03c614c0902ccf7d6160459362a9352f33271 (patch) | |
| tree | b9a8864efe5aa7fc5c96cc5ccbeca41f5cd6f6a7 /arch/arm/mach-vexpress/include/mach/uncompress.h | |
| parent | 34800598b2eebe061445216473b1e4c2ff5cba99 (diff) | |
| parent | cdc3df6f44f72c5924a16a47e1663c3fb0e57820 (diff) | |
Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull "ARM: device tree work" from Arnd Bergmann:
"Most of these patches convert code from using static platform data to
describing the hardware in the device tree. This is only the first
half of the changes for v3.4 because a lot of patches for this topic
came in the last week before the merge window.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>"
Fix up trivial conflicts in arch/arm/mach-vexpress/{Kconfig,core.h}
* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (86 commits)
Document: devicetree: add OF documents for arch-mmp
ARM: dts: append DTS file of pxa168
ARM: mmp: append OF support on pxa168
ARM: mmp: enable rtc clk in pxa168
i2c: pxa: add OF support
serial: pxa: add OF support
arm/dts: mt_ventoux: very basic support for TeeJet Mt.Ventoux board
ARM: OMAP2+: Remove extra ifdefs for board-generic
ARM: OMAP2+: Fix build error when only ARCH_OMAP2/3 or 4 is selected
ASoC: DT: Add digital microphone binding to PAZ00 board.
ARM: dt: Add ARM PMU to tegra*.dtsi
ARM: at91: at91sam9x5cm/dt: add leds support
ARM: at91: usb_a9g20/dt: add gpio-keys support
ARM: at91: at91sam9m10g45ek/dt: add gpio-keys support
ARM: at91: at91sam9m10g45ek/dt: add leds support
ARM: at91: usb_a9g20/dt: add leds support
ARM: at91/pio: add new PIO3 features
ARM: at91: add sam9_smc.o to at91sam9x5 build
ARM: at91/tc/clocksource: Add 32 bit variant to Timer Counter
ARM: at91/tc: add device tree support to atmel_tclib
...
Diffstat (limited to 'arch/arm/mach-vexpress/include/mach/uncompress.h')
| -rw-r--r-- | arch/arm/mach-vexpress/include/mach/uncompress.h | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/arch/arm/mach-vexpress/include/mach/uncompress.h b/arch/arm/mach-vexpress/include/mach/uncompress.h index 7972c5748d0e..7dab5596b868 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 |