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-omap1 | |
parent | 918cae14872c56446415299fc17cf98704c9a537 (diff) | |
parent | 61b603b4ee0c70708539e2fa5c3d47f17b7c7849 (diff) | |
download | kernel_samsung_tuna-be26a3df0b80307bf8f73cea535c112210151bb9.zip kernel_samsung_tuna-be26a3df0b80307bf8f73cea535c112210151bb9.tar.gz kernel_samsung_tuna-be26a3df0b80307bf8f73cea535c112210151bb9.tar.bz2 |
Merge branch 'debug-ll' into omap-for-linus
Diffstat (limited to 'arch/arm/mach-omap1')
-rw-r--r-- | arch/arm/mach-omap1/include/mach/debug-macro.S | 90 | ||||
-rw-r--r-- | arch/arm/mach-omap1/serial.c | 6 |
2 files changed, 79 insertions, 17 deletions
diff --git a/arch/arm/mach-omap1/include/mach/debug-macro.S b/arch/arm/mach-omap1/include/mach/debug-macro.S index aedb746..b6d9584 100644 --- a/arch/arm/mach-omap1/include/mach/debug-macro.S +++ b/arch/arm/mach-omap1/include/mach/debug-macro.S @@ -11,18 +11,80 @@ * */ - .macro addruart,rx +#include <linux/serial_reg.h> + +#include <plat/serial.h> + + .pushsection .data +omap_uart_phys: .word 0x0 +omap_uart_virt: .word 0x0 + .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 */ +9: 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 + ldr \rx, [\rx, #0] + cmp \rx, #0 @ is port configured? + bne 99f @ already configured + + /* Check 7XX UART1 scratchpad register for uart to use */ + mrc p15, 0, \rx, c1, c0 + tst \rx, #1 @ MMU enabled? + moveq \rx, #0xff000000 @ physical base address + movne \rx, #0xfe000000 @ virtual base + orr \rx, \rx, #0x00fb0000 @ OMAP1UART1 + ldrb \rx, [\rx, #(UART_SCR << OMAP7XX_PORT_SHIFT)] + cmp \rx, #0 @ anything in 7XX scratchpad? + bne 10f @ found 7XX uart + + /* Check 15xx/16xx UART1 scratchpad register for uart to use */ mrc p15, 0, \rx, c1, c0 tst \rx, #1 @ MMU enabled? moveq \rx, #0xff000000 @ physical base address movne \rx, #0xfe000000 @ virtual base - orr \rx, \rx, #0x00fb0000 -#ifdef CONFIG_OMAP_LL_DEBUG_UART3 - orr \rx, \rx, #0x00009000 @ UART 3 -#endif -#if defined(CONFIG_OMAP_LL_DEBUG_UART2) || defined(CONFIG_OMAP_LL_DEBUG_UART3) - orr \rx, \rx, #0x00000800 @ UART 2 & 3 -#endif + orr \rx, \rx, #0x00fb0000 @ OMAP1UART1 + ldrb \rx, [\rx, #(UART_SCR << OMAP_PORT_SHIFT)] + + /* Select the UART to use based on the UART1 scratchpad value */ +10: cmp \rx, #0 @ no port configured? + beq 11f @ if none, try to use UART1 + cmp \rx, #OMAP1UART1 + beq 11f @ configure OMAP1UART1 + cmp \rx, #OMAP1UART2 + beq 12f @ configure OMAP1UART2 + cmp \rx, #OMAP1UART3 + beq 13f @ configure OMAP2UART3 + + /* Configure the UART offset from the phys/virt base */ +11: mov \rx, #0x00fb0000 @ OMAP1UART1 + b 98f +12: mov \rx, #0x00fb0000 @ OMAP1UART1 + orr \rx, \rx, #0x00000800 @ OMAP1UART2 + b 98f +13: mov \rx, #0x00fb0000 @ OMAP1UART1 + orr \rx, \rx, #0x00000800 @ OMAP1UART2 + orr \rx, \rx, #0x00009000 @ OMAP1UART3 + + /* Store both phys and virt address for the uart */ +98: add \rx, \rx, #0xff000000 @ phys base + ldr \tmp, =omap_uart_phys + str \rx, [\tmp, #0] + sub \rx, \rx, #0xff000000 @ phys base + add \rx, \rx, #0xfe000000 @ virt base + ldr \tmp, =omap_uart_virt + str \rx, [\tmp, #0] + b 9b +99: .endm .macro senduart,rd,rx @@ -30,13 +92,13 @@ .endm .macro busyuart,rd,rx -1001: ldrb \rd, [\rx, #(0x5 << 2)] @ OMAP-1510 and friends - and \rd, \rd, #0x60 - teq \rd, #0x60 +1001: ldrb \rd, [\rx, #(UART_LSR << OMAP_PORT_SHIFT)] + and \rd, \rd, #(UART_LSR_TEMT | UART_LSR_THRE) + teq \rd, #(UART_LSR_TEMT | UART_LSR_THRE) beq 1002f - ldrb \rd, [\rx, #(0x5 << 0)] @ OMAP-730 only - and \rd, \rd, #0x60 - teq \rd, #0x60 + ldrb \rd, [\rx, #(UART_LSR << OMAP7XX_PORT_SHIFT)] + and \rd, \rd, #(UART_LSR_TEMT | UART_LSR_THRE) + teq \rd, #(UART_LSR_TEMT | UART_LSR_THRE) bne 1001b 1002: .endm diff --git a/arch/arm/mach-omap1/serial.c b/arch/arm/mach-omap1/serial.c index 6e5207c..349de90 100644 --- a/arch/arm/mach-omap1/serial.c +++ b/arch/arm/mach-omap1/serial.c @@ -64,7 +64,7 @@ static void __init omap_serial_reset(struct plat_serial8250_port *p) static struct plat_serial8250_port serial_platform_data[] = { { - .mapbase = OMAP_UART1_BASE, + .mapbase = OMAP1_UART1_BASE, .irq = INT_UART1, .flags = UPF_BOOT_AUTOCONF, .iotype = UPIO_MEM, @@ -72,7 +72,7 @@ static struct plat_serial8250_port serial_platform_data[] = { .uartclk = OMAP16XX_BASE_BAUD * 16, }, { - .mapbase = OMAP_UART2_BASE, + .mapbase = OMAP1_UART2_BASE, .irq = INT_UART2, .flags = UPF_BOOT_AUTOCONF, .iotype = UPIO_MEM, @@ -80,7 +80,7 @@ static struct plat_serial8250_port serial_platform_data[] = { .uartclk = OMAP16XX_BASE_BAUD * 16, }, { - .mapbase = OMAP_UART3_BASE, + .mapbase = OMAP1_UART3_BASE, .irq = INT_UART3, .flags = UPF_BOOT_AUTOCONF, .iotype = UPIO_MEM, |