diff options
Diffstat (limited to 'arch/arm/mach-omap1/include/mach/debug-macro.S')
| -rw-r--r-- | arch/arm/mach-omap1/include/mach/debug-macro.S | 68 |
1 files changed, 35 insertions, 33 deletions
diff --git a/arch/arm/mach-omap1/include/mach/debug-macro.S b/arch/arm/mach-omap1/include/mach/debug-macro.S index 671408eb4ab4..6a0fa0462365 100644 --- a/arch/arm/mach-omap1/include/mach/debug-macro.S +++ b/arch/arm/mach-omap1/include/mach/debug-macro.S @@ -28,56 +28,58 @@ 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, rx, tmp + .macro addruart, rp, rv /* Use omap_uart_phys/virt if already configured */ -9: mrc p15, 0, \rx, c1, c0 - tst \rx, #1 @ MMU enabled? - ldreq \rx, =__virt_to_phys(omap_uart_phys) @ physical base address - ldrne \rx, =omap_uart_virt @ virtual base - ldr \rx, [\rx, #0] - cmp \rx, #0 @ is port configured? +9: mrc p15, 0, \rp, c1, c0 + tst \rp, #1 @ MMU enabled? + ldreq \rp, =__virt_to_phys(omap_uart_phys) @ MMU not enabled + ldrne \rp, =omap_uart_phys @ MMU enabled + add \rv, \rp, #4 @ omap_uart_virt + ldr \rp, [\rp, #0] + ldr \rv, [\rv, #0] + cmp \rp, #0 @ is port configured? + cmpne \rv, #0 bne 99f @ already configured /* Check the debug UART configuration set in uncompress.h */ - mrc p15, 0, \rx, c1, c0 - tst \rx, #1 @ MMU enabled? - ldreq \rx, =OMAP_UART_INFO - ldrne \rx, =__phys_to_virt(OMAP_UART_INFO) - ldr \rx, [\rx, #0] + mrc p15, 0, \rp, c1, c0 + tst \rp, #1 @ MMU enabled? + ldreq \rp, =OMAP_UART_INFO @ MMU not enabled + ldrne \rp, =__phys_to_virt(OMAP_UART_INFO) @ MMU enabled + ldr \rp, [\rp, #0] /* Select the UART to use based on the UART1 scratchpad value */ -10: cmp \rx, #0 @ no port configured? +10: cmp \rp, #0 @ no port configured? beq 11f @ if none, try to use UART1 - cmp \rx, #OMAP1UART1 + cmp \rp, #OMAP1UART1 beq 11f @ configure OMAP1UART1 - cmp \rx, #OMAP1UART2 + cmp \rp, #OMAP1UART2 beq 12f @ configure OMAP1UART2 - cmp \rx, #OMAP1UART3 + cmp \rp, #OMAP1UART3 beq 13f @ configure OMAP2UART3 /* Configure the UART offset from the phys/virt base */ -11: mov \rx, #0x00fb0000 @ OMAP1UART1 +11: mov \rp, #0x00fb0000 @ OMAP1UART1 b 98f -12: mov \rx, #0x00fb0000 @ OMAP1UART1 - orr \rx, \rx, #0x00000800 @ OMAP1UART2 +12: mov \rp, #0x00fb0000 @ OMAP1UART1 + orr \rp, \rp, #0x00000800 @ OMAP1UART2 b 98f -13: mov \rx, #0x00fb0000 @ OMAP1UART1 - orr \rx, \rx, #0x00000800 @ OMAP1UART2 - orr \rx, \rx, #0x00009000 @ OMAP1UART3 +13: mov \rp, #0x00fb0000 @ OMAP1UART1 + orr \rp, \rp, #0x00000800 @ OMAP1UART2 + orr \rp, \rp, #0x00009000 @ OMAP1UART3 /* Store both phys and virt address for the uart */ -98: add \rx, \rx, #0xff000000 @ phys base - mrc p15, 0, \tmp, c1, c0 - tst \tmp, #1 @ MMU enabled? - ldreq \tmp, =__virt_to_phys(omap_uart_phys) - ldrne \tmp, =omap_uart_phys - str \rx, [\tmp, #0] - sub \rx, \rx, #0xff000000 @ phys base - add \rx, \rx, #0xfe000000 @ virt base - ldreq \tmp, =__virt_to_phys(omap_uart_virt) - ldrne \tmp, =omap_uart_virt - str \rx, [\tmp, #0] +98: add \rp, \rp, #0xff000000 @ phys base + mrc p15, 0, \rv, c1, c0 + tst \rv, #1 @ MMU enabled? + ldreq \rv, =__virt_to_phys(omap_uart_phys) @ MMU not enabled + ldrne \rv, =omap_uart_phys @ MMU enabled + str \rp, [\rv, #0] + sub \rp, \rp, #0xff000000 @ phys base + add \rp, \rp, #0xfe000000 @ virt base + add \rv, \rv, #4 @ omap_uart_lsr + str \rp, [\rv, #0] b 9b 99: .endm |