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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* arch/arm/mach-netx/include/mach/uncompress.h
*
* Copyright (C) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*/
/*
* The following code assumes the serial port has already been
* initialized by the bootloader. We search for the first enabled
* port in the most probable order. If you didn't setup a port in
* your bootloader then nothing will appear (which might be desired).
*
* This does not append a newline
*/
#define REG(x) (*(volatile unsigned long *)(x))
#define UART1_BASE 0x100a00
#define UART2_BASE 0x100a80
#define UART_DR 0x0
#define UART_CR 0x14
#define CR_UART_EN (1<<0)
#define UART_FR 0x18
#define FR_BUSY (1<<3)
#define FR_TXFF (1<<5)
static inline void putc(char c)
{
unsigned long base;
if (REG(UART1_BASE + UART_CR) & CR_UART_EN)
base = UART1_BASE;
else if (REG(UART2_BASE + UART_CR) & CR_UART_EN)
base = UART2_BASE;
else
return;
while (REG(base + UART_FR) & FR_TXFF);
REG(base + UART_DR) = c;
}
static inline void flush(void)
{
unsigned long base;
if (REG(UART1_BASE + UART_CR) & CR_UART_EN)
base = UART1_BASE;
else if (REG(UART2_BASE + UART_CR) & CR_UART_EN)
base = UART2_BASE;
else
return;
while (REG(base + UART_FR) & FR_BUSY);
}
/*
* nothing to do
*/
#define arch_decomp_setup()
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