diff options
author | Tony Lindgren <tony@atomide.com> | 2010-02-15 09:26:07 -0800 |
---|---|---|
committer | Tony Lindgren <tony@atomide.com> | 2010-02-15 09:26:07 -0800 |
commit | be26a3df0b80307bf8f73cea535c112210151bb9 (patch) | |
tree | 8e3d90563b6d689ad37500929c05c211153295be /arch/arm/mach-omap2 | |
parent | 918cae14872c56446415299fc17cf98704c9a537 (diff) | |
parent | 61b603b4ee0c70708539e2fa5c3d47f17b7c7849 (diff) |
Merge branch 'debug-ll' into omap-for-linus
Diffstat (limited to 'arch/arm/mach-omap2')
-rwxr-xr-x | arch/arm/mach-omap2/board-3630sdp.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-omap2/board-zoom3.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-omap2/include/mach/debug-macro.S | 132 | ||||
-rw-r--r-- | arch/arm/mach-omap2/serial.c | 15 |
4 files changed, 115 insertions, 36 deletions
diff --git a/arch/arm/mach-omap2/board-3630sdp.c b/arch/arm/mach-omap2/board-3630sdp.c index 73905963281..c178e68472f 100755 --- a/arch/arm/mach-omap2/board-3630sdp.c +++ b/arch/arm/mach-omap2/board-3630sdp.c @@ -68,7 +68,7 @@ static struct ehci_hcd_omap_platform_data ehci_pdata __initconst = { static void __init omap_sdp_map_io(void) { - omap2_set_globals_343x(); + omap2_set_globals_36xx(); omap2_map_common_io(); } diff --git a/arch/arm/mach-omap2/board-zoom3.c b/arch/arm/mach-omap2/board-zoom3.c index a9fe9181b01..456b6907267 100644 --- a/arch/arm/mach-omap2/board-zoom3.c +++ b/arch/arm/mach-omap2/board-zoom3.c @@ -26,7 +26,7 @@ static void __init omap_zoom_map_io(void) { - omap2_set_globals_343x(); + omap2_set_globals_36xx(); omap2_map_common_io(); } diff --git a/arch/arm/mach-omap2/include/mach/debug-macro.S b/arch/arm/mach-omap2/include/mach/debug-macro.S index e9f255df916..4a63a2ea484 100644 --- a/arch/arm/mach-omap2/include/mach/debug-macro.S +++ b/arch/arm/mach-omap2/include/mach/debug-macro.S @@ -11,32 +11,107 @@ * */ - .macro addruart,rx +#include <linux/serial_reg.h> + +#include <plat/serial.h> + +#define UART_OFFSET(addr) ((addr) & 0x00ffffff) + + .pushsection .data +omap_uart_phys: .word 0 +omap_uart_virt: .word 0 +omap_uart_lsr: .word 0 + .popsection + + /* + * Note that this code won't work if the bootloader passes + * a wrong machine ID number in r1. To debug, just hardcode + * the desired UART phys and virt addresses temporarily into + * the omap_uart_phys and omap_uart_virt above. + */ + .macro addruart, rx, tmp + + /* Use omap_uart_phys/virt if already configured */ +10: mrc p15, 0, \rx, c1, c0 + tst \rx, #1 @ MMU enabled? + ldreq \rx, =omap_uart_phys @ physical base address + ldrne \rx, =omap_uart_virt @ virtual base address + ldr \rx, [\rx, #0] + cmp \rx, #0 @ is port configured? + bne 99f @ already configured + + /* Check UART1 scratchpad register for uart to use */ mrc p15, 0, \rx, c1, c0 tst \rx, #1 @ MMU enabled? -#ifdef CONFIG_ARCH_OMAP2 moveq \rx, #0x48000000 @ physical base address movne \rx, #0xfa000000 @ virtual base - orr \rx, \rx, #0x0006a000 -#ifdef CONFIG_OMAP_LL_DEBUG_UART2 - add \rx, \rx, #0x00002000 @ UART 2 -#endif -#ifdef CONFIG_OMAP_LL_DEBUG_UART3 - add \rx, \rx, #0x00004000 @ UART 3 -#endif - -#elif defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4) - moveq \rx, #0x48000000 @ physical base address - movne \rx, #0xfa000000 @ virtual base - orr \rx, \rx, #0x0006a000 -#ifdef CONFIG_OMAP_LL_DEBUG_UART2 - add \rx, \rx, #0x00002000 @ UART 2 -#endif -#ifdef CONFIG_OMAP_LL_DEBUG_UART3 - add \rx, \rx, #0x00fb0000 @ UART 3 - add \rx, \rx, #0x00006000 -#endif -#endif + orr \rx, \rx, #0x0006a000 @ uart1 on omap2/3/4 + ldrb \rx, [\rx, #(UART_SCR << OMAP_PORT_SHIFT)] @ scratchpad + + /* Select the UART to use based on the UART1 scratchpad value */ + cmp \rx, #0 @ no port configured? + beq 21f @ if none, try to use UART1 + cmp \rx, #OMAP2UART1 @ OMAP2/3/4UART1 + beq 21f @ configure OMAP2/3/4UART1 + cmp \rx, #OMAP2UART2 @ OMAP2/3/4UART2 + beq 22f @ configure OMAP2/3/4UART2 + cmp \rx, #OMAP2UART3 @ only on 24xx + beq 23f @ configure OMAP2UART3 + cmp \rx, #OMAP3UART3 @ only on 34xx + beq 33f @ configure OMAP3UART3 + cmp \rx, #OMAP4UART3 @ only on 44xx + beq 43f @ configure OMAP4UART3 + cmp \rx, #OMAP3UART4 @ only on 36xx + beq 34f @ configure OMAP3UART4 + cmp \rx, #OMAP4UART4 @ only on 44xx + beq 44f @ configure OMAP4UART4 + cmp \rx, #ZOOM_UART @ only on zoom2/3 + beq 95f @ configure ZOOM_UART + + /* Configure the UART offset from the phys/virt base */ +21: mov \rx, #UART_OFFSET(OMAP2_UART1_BASE) @ omap2/3/4 + b 98f +22: mov \rx, #UART_OFFSET(OMAP2_UART2_BASE) @ omap2/3/4 + b 98f +23: mov \rx, #UART_OFFSET(OMAP2_UART3_BASE) + b 98f +33: mov \rx, #UART_OFFSET(OMAP3_UART1_BASE) + add \rx, \rx, #0x00fb0000 + add \rx, \rx, #0x00006000 @ OMAP3_UART3_BASE + b 98f +34: mov \rx, #UART_OFFSET(OMAP3_UART1_BASE) + add \rx, \rx, #0x00fb0000 + add \rx, \rx, #0x00028000 @ OMAP3_UART4_BASE + b 98f +43: mov \rx, #UART_OFFSET(OMAP4_UART3_BASE) + b 98f +44: mov \rx, #UART_OFFSET(OMAP4_UART4_BASE) + b 98f +95: mov \rx, #ZOOM_UART_BASE + ldr \tmp, =omap_uart_phys + str \rx, [\tmp, #0] + mov \rx, #ZOOM_UART_VIRT + ldr \tmp, =omap_uart_virt + str \rx, [\tmp, #0] + mov \rx, #(UART_LSR << ZOOM_PORT_SHIFT) + ldr \tmp, =omap_uart_lsr + str \rx, [\tmp, #0] + b 10b + + /* Store both phys and virt address for the uart */ +98: add \rx, \rx, #0x48000000 @ phys base + ldr \tmp, =omap_uart_phys + str \rx, [\tmp, #0] + sub \rx, \rx, #0x48000000 @ phys base + add \rx, \rx, #0xfa000000 @ virt base + ldr \tmp, =omap_uart_virt + str \rx, [\tmp, #0] + mov \rx, #(UART_LSR << OMAP_PORT_SHIFT) + ldr \tmp, =omap_uart_lsr + str \rx, [\tmp, #0] + + b 10b +99: .endm .macro senduart,rd,rx @@ -44,15 +119,12 @@ .endm .macro busyuart,rd,rx -1001: ldrb \rd, [\rx, #(0x5 << 2)] @ OMAP-1510 and friends - and \rd, \rd, #0x60 - teq \rd, #0x60 - beq 1002f - ldrb \rd, [\rx, #(0x5 << 0)] @ OMAP-730 only - and \rd, \rd, #0x60 - teq \rd, #0x60 +1001: ldr \rd, =omap_uart_lsr + ldr \rd, [\rd, #0] + ldrb \rd, [\rx, \rd] + 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 diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index e10a02df6e1..e657674d549 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -80,7 +80,6 @@ static LIST_HEAD(uart_list); static struct plat_serial8250_port serial_platform_data0[] = { { - .mapbase = OMAP_UART1_BASE, .irq = 72, .flags = UPF_BOOT_AUTOCONF, .iotype = UPIO_MEM, @@ -93,7 +92,6 @@ static struct plat_serial8250_port serial_platform_data0[] = { static struct plat_serial8250_port serial_platform_data1[] = { { - .mapbase = OMAP_UART2_BASE, .irq = 73, .flags = UPF_BOOT_AUTOCONF, .iotype = UPIO_MEM, @@ -106,7 +104,6 @@ static struct plat_serial8250_port serial_platform_data1[] = { static struct plat_serial8250_port serial_platform_data2[] = { { - .mapbase = OMAP_UART3_BASE, .irq = 74, .flags = UPF_BOOT_AUTOCONF, .iotype = UPIO_MEM, @@ -120,7 +117,6 @@ static struct plat_serial8250_port serial_platform_data2[] = { #ifdef CONFIG_ARCH_OMAP4 static struct plat_serial8250_port serial_platform_data3[] = { { - .mapbase = OMAP_UART4_BASE, .irq = 70, .flags = UPF_BOOT_AUTOCONF, .iotype = UPIO_MEM, @@ -131,6 +127,17 @@ static struct plat_serial8250_port serial_platform_data3[] = { } }; #endif + +void __init omap2_set_globals_uart(struct omap_globals *omap2_globals) +{ + serial_platform_data0[0].mapbase = omap2_globals->uart1_phys; + serial_platform_data1[0].mapbase = omap2_globals->uart2_phys; + serial_platform_data2[0].mapbase = omap2_globals->uart3_phys; +#ifdef CONFIG_ARCH_OMAP4 + serial_platform_data3[0].mapbase = omap2_globals->uart4_phys; +#endif +} + static inline unsigned int __serial_read_reg(struct uart_port *up, int offset) { |