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Commit e352953c authored by Atsushi Nemoto's avatar Atsushi Nemoto Committed by Ralf Baechle
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[MIPS] TXx9: Support early_printk 



Kill jmr3927-specific prom_putchar and add txx9-generic prom_putchar
to support early_printk.

Signed-off-by: default avatarAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 7779a5e0

arch/mips/txx9/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ config SOC_TX3927 
	select IRQ_TXX9

	select SWAP_IO_SPACE

	select SYS_HAS_CPU_TX39XX

	select SYS_HAS_EARLY_PRINTK

	select SYS_SUPPORTS_32BIT_KERNEL

	select SYS_SUPPORTS_LITTLE_ENDIAN

	select SYS_SUPPORTS_BIG_ENDIAN
@@ -49,6 +50,7 @@ config SOC_TX4927 
	select PCI_TX4927

	select SWAP_IO_SPACE

	select SYS_HAS_CPU_TX49XX

	select SYS_HAS_EARLY_PRINTK

	select SYS_SUPPORTS_32BIT_KERNEL

	select SYS_SUPPORTS_64BIT_KERNEL

	select SYS_SUPPORTS_LITTLE_ENDIAN
@@ -70,6 +72,7 @@ config SOC_TX4938 
	select PCI_TX4927

	select SWAP_IO_SPACE

	select SYS_HAS_CPU_TX49XX

	select SYS_HAS_EARLY_PRINTK

	select SYS_SUPPORTS_32BIT_KERNEL

	select SYS_SUPPORTS_64BIT_KERNEL

	select SYS_SUPPORTS_LITTLE_ENDIAN

arch/mips/txx9/generic/setup.c

+31 −0
Original line number Diff line number Diff line
@@ -271,6 +271,37 @@ void __init txx9_sio_init(unsigned long baseaddr, int irq, 
#endif /* CONFIG_SERIAL_TXX9 */

}



#ifdef CONFIG_EARLY_PRINTK

static void __init null_prom_putchar(char c)

{

}

void (*txx9_prom_putchar)(char c) __initdata = null_prom_putchar;



void __init prom_putchar(char c)

{

	txx9_prom_putchar(c);

}



static void __iomem *early_txx9_sio_port;



static void __init early_txx9_sio_putchar(char c)

{

#define TXX9_SICISR	0x0c

#define TXX9_SITFIFO	0x1c

#define TXX9_SICISR_TXALS	0x00000002

	while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &

		 TXX9_SICISR_TXALS))

		;

	__raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);

}



void __init txx9_sio_putchar_init(unsigned long baseaddr)

{

	early_txx9_sio_port = ioremap(baseaddr, 0x24);

	txx9_prom_putchar = early_txx9_sio_putchar;

}

#endif /* CONFIG_EARLY_PRINTK */



/* wrappers */

void __init plat_mem_setup(void)

{

arch/mips/txx9/jmr3927/prom.c

+1 −16
Original line number Diff line number Diff line
@@ -41,22 +41,6 @@ 
#include <asm/txx9/generic.h>

#include <asm/txx9/jmr3927.h>



#define TIMEOUT       0xffffff



void

prom_putchar(char c)

{

        int i = 0;



        do {

            i++;

            if (i>TIMEOUT)

                break;

        } while (!(tx3927_sioptr(1)->cisr & TXx927_SICISR_TXALS));

	tx3927_sioptr(1)->tfifo = c;

	return;

}



void __init jmr3927_prom_init(void)

{

	/* CCFG */
@@ -65,4 +49,5 @@ void __init jmr3927_prom_init(void) 


	prom_init_cmdline();

	add_memory_region(0, JMR3927_SDRAM_SIZE, BOOT_MEM_RAM);

	txx9_sio_putchar_init(TX3927_SIO_REG(1));

}

arch/mips/txx9/rbtx4927/prom.c

+1 −0
Original line number Diff line number Diff line
@@ -38,4 +38,5 @@ void __init rbtx4927_prom_init(void) 
{

	prom_init_cmdline();

	add_memory_region(0, tx4927_get_mem_size(), BOOT_MEM_RAM);

	txx9_sio_putchar_init(TX4927_SIO_REG(0) & 0xfffffffffULL);

}

arch/mips/txx9/rbtx4938/prom.c

+1 −0
Original line number Diff line number Diff line
@@ -22,4 +22,5 @@ void __init rbtx4938_prom_init(void) 
	prom_init_cmdline();

#endif

	add_memory_region(0, tx4938_get_mem_size(), BOOT_MEM_RAM);

	txx9_sio_putchar_init(TX4938_SIO_REG(0) & 0xfffffffffULL);

}