diff options
Diffstat (limited to 'arch/arm/mach-omap1/include')
| -rw-r--r-- | arch/arm/mach-omap1/include/mach/debug-macro.S | 48 | ||||
| -rw-r--r-- | arch/arm/mach-omap1/include/mach/memory.h | 53 |
2 files changed, 73 insertions, 28 deletions
diff --git a/arch/arm/mach-omap1/include/mach/debug-macro.S b/arch/arm/mach-omap1/include/mach/debug-macro.S index 62856044eb6..2b36a281dc8 100644 --- a/arch/arm/mach-omap1/include/mach/debug-macro.S +++ b/arch/arm/mach-omap1/include/mach/debug-macro.S @@ -13,13 +13,8 @@ #include <linux/serial_reg.h> -#include <asm/memory.h> - #include <plat/serial.h> -#define omap_uart_v2p(x) ((x) - PAGE_OFFSET + PLAT_PHYS_OFFSET) -#define omap_uart_p2v(x) ((x) - PLAT_PHYS_OFFSET + PAGE_OFFSET) - .pushsection .data omap_uart_phys: .word 0x0 omap_uart_virt: .word 0x0 @@ -31,26 +26,24 @@ omap_uart_virt: .word 0x0 * the desired UART phys and virt addresses temporarily into * the omap_uart_phys and omap_uart_virt above. */ - .macro addruart, rp, rv + .macro addruart, rp, rv, tmp /* Use omap_uart_phys/virt if already configured */ -9: mrc p15, 0, \rp, c1, c0 - tst \rp, #1 @ MMU enabled? - ldreq \rp, =omap_uart_v2p(omap_uart_phys) @ MMU disabled - ldrne \rp, =omap_uart_phys @ MMU enabled - add \rv, \rp, #4 @ omap_uart_virt - ldr \rp, [\rp, #0] - ldr \rv, [\rv, #0] +9: adr \rp, 99f @ get effective addr of 99f + ldr \rv, [\rp] @ get absolute addr of 99f + sub \rv, \rv, \rp @ offset between the two + ldr \rp, [\rp, #4] @ abs addr of omap_uart_phys + sub \tmp, \rp, \rv @ make it effective + ldr \rp, [\tmp, #0] @ omap_uart_phys + ldr \rv, [\tmp, #4] @ omap_uart_virt cmp \rp, #0 @ is port configured? cmpne \rv, #0 - bne 99f @ already configured + bne 100f @ already configured /* Check the debug UART configuration set in uncompress.h */ - mrc p15, 0, \rp, c1, c0 - tst \rp, #1 @ MMU enabled? - ldreq \rp, =OMAP_UART_INFO @ MMU not enabled - ldrne \rp, =omap_uart_p2v(OMAP_UART_INFO) @ MMU enabled - ldr \rp, [\rp, #0] + and \rp, pc, #0xff000000 + ldr \rv, =OMAP_UART_INFO_OFS + ldr \rp, [\rp, \rv] /* Select the UART to use based on the UART1 scratchpad value */ 10: cmp \rp, #0 @ no port configured? @@ -74,17 +67,18 @@ omap_uart_virt: .word 0x0 /* Store both phys and virt address for the uart */ 98: add \rp, \rp, #0xff000000 @ phys base - mrc p15, 0, \rv, c1, c0 - tst \rv, #1 @ MMU enabled? - ldreq \rv, =omap_uart_v2p(omap_uart_phys) @ MMU disabled - ldrne \rv, =omap_uart_phys @ MMU enabled - str \rp, [\rv, #0] + str \rp, [\tmp, #0] @ omap_uart_phys sub \rp, \rp, #0xff000000 @ phys base add \rp, \rp, #0xfe000000 @ virt base - add \rv, \rv, #4 @ omap_uart_lsr - str \rp, [\rv, #0] + str \rp, [\tmp, #4] @ omap_uart_virt b 9b -99: + + .align +99: .word . + .word omap_uart_phys + .ltorg + +100: .endm .macro senduart,rd,rx diff --git a/arch/arm/mach-omap1/include/mach/memory.h b/arch/arm/mach-omap1/include/mach/memory.h index e9b600c113e..c6337645ba8 100644 --- a/arch/arm/mach-omap1/include/mach/memory.h +++ b/arch/arm/mach-omap1/include/mach/memory.h @@ -2,4 +2,55 @@ * arch/arm/mach-omap1/include/mach/memory.h */ -#include <plat/memory.h> +#ifndef __ASM_ARCH_MEMORY_H +#define __ASM_ARCH_MEMORY_H + +/* + * Physical DRAM offset. + */ +#define PLAT_PHYS_OFFSET UL(0x10000000) + +/* + * Bus address is physical address, except for OMAP-1510 Local Bus. + * OMAP-1510 bus address is translated into a Local Bus address if the + * OMAP bus type is lbus. We do the address translation based on the + * device overriding the defaults used in the dma-mapping API. + * Note that the is_lbus_device() test is not very efficient on 1510 + * because of the strncmp(). + */ +#ifdef CONFIG_ARCH_OMAP15XX + +/* + * OMAP-1510 Local Bus address offset + */ +#define OMAP1510_LB_OFFSET UL(0x30000000) + +#define virt_to_lbus(x) ((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET) +#define lbus_to_virt(x) ((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET) +#define is_lbus_device(dev) (cpu_is_omap15xx() && dev && (strncmp(dev_name(dev), "ohci", 4) == 0)) + +#define __arch_pfn_to_dma(dev, pfn) \ + ({ dma_addr_t __dma = __pfn_to_phys(pfn); \ + if (is_lbus_device(dev)) \ + __dma = __dma - PHYS_OFFSET + OMAP1510_LB_OFFSET; \ + __dma; }) + +#define __arch_dma_to_pfn(dev, addr) \ + ({ dma_addr_t __dma = addr; \ + if (is_lbus_device(dev)) \ + __dma += PHYS_OFFSET - OMAP1510_LB_OFFSET; \ + __phys_to_pfn(__dma); \ + }) + +#define __arch_dma_to_virt(dev, addr) ({ (void *) (is_lbus_device(dev) ? \ + lbus_to_virt(addr) : \ + __phys_to_virt(addr)); }) + +#define __arch_virt_to_dma(dev, addr) ({ unsigned long __addr = (unsigned long)(addr); \ + (dma_addr_t) (is_lbus_device(dev) ? \ + virt_to_lbus(__addr) : \ + __virt_to_phys(__addr)); }) + +#endif /* CONFIG_ARCH_OMAP15XX */ + +#endif |