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ux500: fix uncompressor UART address for U5500 

The uncompress code for zImage uses the UART to print status messages,
this was hard coded to use UART2 for the U8500 platform. This patch
checks at run time which platform it is run on. U5500 uses UART0 as
console UART.

Signed-off-by: Carl-Johan Irekvist <carl-johan.irekvist@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
hifive-unleashed-5.1
Carl-Johan Irekvist 2010-12-08 11:07:53 +05:30 committed by Linus Walleij
parent e8b1cc3a34
commit ec4a637d35
1 changed files with 14 additions and 9 deletions
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23
arch/arm/mach-ux500/include/mach/uncompress.h
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@ -19,38 +19,43 @@
#define __ASM_ARCH_UNCOMPRESS_H
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <linux/io.h>
#include <linux/amba/serial.h>
#include <mach/hardware.h>
#define U8500_UART_DR 0x80007000
#define U8500_UART_LCRH 0x8000702c
#define U8500_UART_CR 0x80007030
#define U8500_UART_FR 0x80007018
static u32 ux500_uart_base;
static void putc(const char c)
{
/* Do nothing if the UART is not enabled. */
if (!(__raw_readb(U8500_UART_CR) & 0x1))
if (!(__raw_readb(ux500_uart_base + UART011_CR) & 0x1))
return;
if (c == '\n')
putc('\r');
while (__raw_readb(U8500_UART_FR) & (1 << 5))
while (__raw_readb(ux500_uart_base + UART01x_FR) & (1 << 5))
barrier();
__raw_writeb(c, U8500_UART_DR);
__raw_writeb(c, ux500_uart_base + UART01x_DR);
}
static void flush(void)
{
if (!(__raw_readb(U8500_UART_CR) & 0x1))
if (!(__raw_readb(ux500_uart_base + UART011_CR) & 0x1))
return;
while (__raw_readb(U8500_UART_FR) & (1 << 3))
while (__raw_readb(ux500_uart_base + UART01x_FR) & (1 << 3))
barrier();
}
static inline void arch_decomp_setup(void)
{
if (machine_is_u8500())
ux500_uart_base = U8500_UART2_BASE;
else if (machine_is_u5500())
ux500_uart_base = U5500_UART0_BASE;
else /* not much can be done to help here */
ux500_uart_base = U8500_UART2_BASE;
}
#define arch_decomp_wdog() /* nothing to do here */