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omap2/3: Fix DEBUG_LL for omap zoom2/3

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Zoom2 and 3 have UARTs only on the external debug board.
GPMC needs to be mapped early to use it for DEBUG_LL.

Additionally, 0xfb000000 overlaps with other areas, so
use 0xfa400000 for the virtual address instead.

Note that with the pending serial.c patches you need to
set console=ttyS0,115200n8 as it will be the only UART
mapped. To use DEBUG_LL, you need to pass also earlyprintk
in cmdline.

Cc: Allen Pais <allen.pais@ti.com>
Acked-by: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren 2010-04-30 12:57:14 -07:00
parent 96554d7077
commit a4f57b8138
6 changed files with 17 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-omap2/board-zoom-debugboard.c
View File

@ -82,7 +82,7 @@ static inline void __init zoom_init_smsc911x(void)
static struct plat_serial8250_port serial_platform_data[] = {
{
.mapbase = 0x10000000,
.mapbase = ZOOM_UART_BASE,
.irq = OMAP_GPIO_IRQ(102),
.flags = UPF_BOOT_AUTOCONF|UPF_IOREMAP|UPF_SHARE_IRQ,
.irqflags = IRQF_SHARED | IRQF_TRIGGER_RISING,

4
arch/arm/mach-omap2/board-zoom2.c
View File

@ -91,8 +91,8 @@ static void __init omap_zoom2_map_io(void)
}
MACHINE_START(OMAP_ZOOM2, "OMAP Zoom2 board")
.phys_io = 0x48000000,
.io_pg_offst = ((0xfa000000) >> 18) & 0xfffc,
.phys_io = ZOOM_UART_BASE,
.io_pg_offst = (ZOOM_UART_VIRT >> 18) & 0xfffc,
.boot_params = 0x80000100,
.map_io = omap_zoom2_map_io,
.init_irq = omap_zoom2_init_irq,

4
arch/arm/mach-omap2/board-zoom3.c
View File

@ -73,8 +73,8 @@ static void __init omap_zoom_init(void)
}
MACHINE_START(OMAP_ZOOM3, "OMAP Zoom3 board")
.phys_io = 0x48000000,
.io_pg_offst = ((0xfa000000) >> 18) & 0xfffc,
.phys_io = ZOOM_UART_BASE,
.io_pg_offst = (ZOOM_UART_VIRT >> 18) & 0xfffc,
.boot_params = 0x80000100,
.map_io = omap_zoom_map_io,
.init_irq = omap_zoom_init_irq,

4
arch/arm/mach-omap2/include/mach/debug-macro.S
View File

@ -88,10 +88,10 @@ omap_uart_lsr: .word 0
b 98f
44: mov \rx, #UART_OFFSET(OMAP4_UART4_BASE)
b 98f
95: mov \rx, #ZOOM_UART_BASE
95: ldr \rx, =ZOOM_UART_BASE
ldr \tmp, =omap_uart_phys
str \rx, [\tmp, #0]
mov \rx, #ZOOM_UART_VIRT
ldr \rx, =ZOOM_UART_VIRT
ldr \tmp, =omap_uart_virt
str \rx, [\tmp, #0]
mov \rx, #(UART_LSR << ZOOM_PORT_SHIFT)

9
arch/arm/mach-omap2/io.c
View File

@ -166,6 +166,15 @@ static struct map_desc omap34xx_io_desc[] __initdata = {
.length = L4_EMU_34XX_SIZE,
.type = MT_DEVICE
},
#if defined(CONFIG_DEBUG_LL) && \
(defined(CONFIG_MACH_OMAP_ZOOM2) || defined(CONFIG_MACH_OMAP_ZOOM3))
{
.virtual = ZOOM_UART_VIRT,
.pfn = __phys_to_pfn(ZOOM_UART_BASE),
.length = SZ_1M,
.type = MT_DEVICE
},
#endif
};
#endif
#ifdef CONFIG_ARCH_OMAP4

2
arch/arm/plat-omap/include/plat/serial.h
View File

@ -53,7 +53,7 @@
/* External port on Zoom2/3 */
#define ZOOM_UART_BASE 0x10000000
#define ZOOM_UART_VIRT 0xfb000000
#define ZOOM_UART_VIRT 0xfa400000
#define OMAP_PORT_SHIFT 2
#define OMAP7XX_PORT_SHIFT 0