select GENERIC_CLOCKEVENTS
select PLAT_VERSATILE
select PLAT_VERSATILE_FPGA_IRQ
+ select NEED_MACH_IO_H
select NEED_MACH_MEMORY_H
+ select SPARSE_IRQ
help
Support for ARM's Integrator platform.
select CPU_XSCALE
select GENERIC_GPIO
select GENERIC_CLOCKEVENTS
- select HAVE_SCHED_CLOCK
select MIGHT_HAVE_PCI
+ select NEED_MACH_IO_H
select DMABOUNCE if PCI
help
Support for Intel's IXP4XX (XScale) family of processors.
select GENERIC_CLOCKEVENTS
select GENERIC_GPIO
select HAVE_CLK
- select HAVE_SCHED_CLOCK
select HAVE_SMP
select MIGHT_HAVE_CACHE_L2X0
+ select NEED_MACH_IO_H if PCI
select ARCH_HAS_CPUFREQ
help
This enables support for NVIDIA Tegra based systems (Tegra APX,
select CLKDEV_LOOKUP
select ARCH_USES_GETTIMEOFFSET
select HAVE_S3C2410_I2C if I2C
+ select HAVE_S3C_RTC if RTC_CLASS
+ select HAVE_S3C2410_WATCHDOG if WATCHDOG
+ select NEED_MACH_IO_H
help
- Samsung S3C2410X CPU based systems, such as the Simtec Electronics
- BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
- the Samsung SMDK2410 development board (and derivatives).
-
- Note, the S3C2416 and the S3C2450 are so close that they even share
- the same SoC ID code. This means that there is no separate machine
- directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
+ Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
+ and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
+ (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
+ Samsung SMDK2410 development board (and derivatives).
config ARCH_S3C64XX
bool "Samsung S3C64XX"
*
*/
- #include <mach/io.h>
+#include <linux/serial_reg.h>
+
#include <mach/iomap.h>
+#include <mach/irammap.h>
+
+ .macro addruart, rp, rv, tmp
+ adr \rp, 99f @ actual addr of 99f
+ ldr \rv, [\rp] @ linked addr is stored there
+ sub \rv, \rv, \rp @ offset between the two
+ ldr \rp, [\rp, #4] @ linked tegra_uart_config
+ sub \tmp, \rp, \rv @ actual tegra_uart_config
+ ldr \rp, [\tmp] @ Load tegra_uart_config
+ cmp \rp, #1 @ needs intitialization?
+ bne 100f @ no; go load the addresses
+ mov \rv, #0 @ yes; record init is done
+ str \rv, [\tmp]
+ mov \rp, #TEGRA_IRAM_BASE @ See if cookie is in IRAM
+ ldr \rv, [\rp, #TEGRA_IRAM_DEBUG_UART_OFFSET]
+ movw \rp, #TEGRA_IRAM_DEBUG_UART_COOKIE & 0xffff
+ movt \rp, #TEGRA_IRAM_DEBUG_UART_COOKIE >> 16
+ cmp \rv, \rp @ Cookie present?
+ bne 100f @ No, use default UART
+ mov \rp, #TEGRA_IRAM_BASE @ Load UART address from IRAM
+ ldr \rv, [\rp, #TEGRA_IRAM_DEBUG_UART_OFFSET + 4]
+ str \rv, [\tmp, #4] @ Store in tegra_uart_phys
+ sub \rv, \rv, #IO_APB_PHYS @ Calculate virt address
+ add \rv, \rv, #IO_APB_VIRT
+ str \rv, [\tmp, #8] @ Store in tegra_uart_virt
+ b 100f
+
+ .align
+99: .word .
+ .word tegra_uart_config
+ .ltorg
+
+100: ldr \rp, [\tmp, #4] @ Load tegra_uart_phys
+ ldr \rv, [\tmp, #8] @ Load tegra_uart_virt
+ .endm
+
+#define UART_SHIFT 2
+
+/*
+ * Code below is swiped from <asm/hardware/debug-8250.S>, but add an extra
+ * check to make sure that we aren't in the CONFIG_TEGRA_DEBUG_UART_NONE case.
+ * We use the fact that all 5 valid UART addresses all have something in the
+ * 2nd-to-lowest byte.
+ */
- .macro addruart, rp, rv, tmp
- ldr \rp, =IO_APB_PHYS @ physical
- ldr \rv, =IO_APB_VIRT @ virtual
- orr \rp, \rp, #(TEGRA_DEBUG_UART_BASE & 0xFF)
- orr \rp, \rp, #(TEGRA_DEBUG_UART_BASE & 0xFF00)
- orr \rv, \rv, #(TEGRA_DEBUG_UART_BASE & 0xFF)
- orr \rv, \rv, #(TEGRA_DEBUG_UART_BASE & 0xFF00)
- .endm
+ .macro senduart, rd, rx
+ tst \rx, #0x0000ff00
+ strneb \rd, [\rx, #UART_TX << UART_SHIFT]
+1001:
+ .endm
-#define UART_SHIFT 2
-#include <asm/hardware/debug-8250.S>
+ .macro busyuart, rd, rx
+ tst \rx, #0x0000ff00
+ beq 1002f
+1001: ldrb \rd, [\rx, #UART_LSR << UART_SHIFT]
+ and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
+ teq \rd, #UART_LSR_TEMT | UART_LSR_THRE
+ bne 1001b
+1002:
+ .endm
+ .macro waituart, rd, rx
+#ifdef FLOW_CONTROL
+ tst \rx, #0x0000ff00
+ beq 1002f
+1001: ldrb \rd, [\rx, #UART_MSR << UART_SHIFT]
+ tst \rd, #UART_MSR_CTS
+ beq 1001b
+1002:
+#endif
+ .endm
projects / karo-tx-linux.git / commitdiff