diff options
| author | Michal Simek <monstr@monstr.eu> | 2011-04-14 11:48:43 +0200 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2011-07-25 09:25:13 +0200 |
| commit | 2aa8e37596933a43fc3e46e1e385045635674429 (patch) | |
| tree | 79cbf1212d42d583a5a5951e28d90e27e94df4e4 /arch/microblaze/kernel/early_printk.c | |
| parent | microblaze: Get early printk console earlier (diff) | |
| download | linux-2aa8e37596933a43fc3e46e1e385045635674429.tar.xz linux-2aa8e37596933a43fc3e46e1e385045635674429.zip | |
microblaze: Simplify early console binding from DT
Recognize early Linux console from chosen - linux,stdout-path
instead of detecting the first console with appropriate
compatible strings.
This patch solved the problem on system with multiple
consoles.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze/kernel/early_printk.c')
| -rw-r--r-- | arch/microblaze/kernel/early_printk.c | 48 |
1 files changed, 22 insertions, 26 deletions
diff --git a/arch/microblaze/kernel/early_printk.c b/arch/microblaze/kernel/early_printk.c index 8f8384e98bf7..e21390da0a4d 100644 --- a/arch/microblaze/kernel/early_printk.c +++ b/arch/microblaze/kernel/early_printk.c @@ -127,45 +127,41 @@ void early_printk(const char *fmt, ...) int __init setup_early_printk(char *opt) { + int version = 0; + if (early_console_initialized) return 1; -#ifdef CONFIG_SERIAL_UARTLITE_CONSOLE - base_addr = early_uartlite_console(); + base_addr = of_early_console(&version); if (base_addr) { - early_console_initialized = 1; #ifdef CONFIG_MMU early_console_reg_tlb_alloc(base_addr); #endif - early_console = &early_serial_uartlite_console; - early_printk("early_printk_console is enabled at 0x%08x\n", - base_addr); - - register_console(early_console); - - return 0; - } -#endif /* CONFIG_SERIAL_UARTLITE_CONSOLE */ - + switch (version) { +#ifdef CONFIG_SERIAL_UARTLITE_CONSOLE + case UARTLITE: + printk(KERN_INFO "Early console on uartlite " + "at 0x%08x\n", base_addr); + early_console = &early_serial_uartlite_console; + break; +#endif #ifdef CONFIG_SERIAL_8250_CONSOLE - base_addr = early_uart16550_console(); - base_addr &= ~3; /* clear register offset */ - if (base_addr) { - early_console_initialized = 1; -#ifdef CONFIG_MMU - early_console_reg_tlb_alloc(base_addr); + case UART16550: + printk(KERN_INFO "Early console on uart16650 " + "at 0x%08x\n", base_addr); + early_console = &early_serial_uart16550_console; + break; #endif - early_console = &early_serial_uart16550_console; - - early_printk("early_printk_console is enabled at 0x%08x\n", - base_addr); + default: + printk(KERN_INFO "Unsupported early console %d\n", + version); + return 1; + } register_console(early_console); - + early_console_initialized = 1; return 0; } -#endif /* CONFIG_SERIAL_8250_CONSOLE */ - return 1; } |