ARM: ep93xx: multiplatform support

With the clock support and the interrupts out of the way, ep93xx can be
compiled into the same kernel image as the other ARMv4/v5 platforms. The
last obstacle are the two workarounds for broken boot loaders that
require us to re-initialize the ethernet controller and/or the watchdog
on certain machines.

Move this code into the decompressor sources directly, checking for
each possibly affected machine individually.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 89 deletions

diff --git a/arch/arm/mach-ep93xx/include/mach/uncompress.h b/arch/arm/mach-ep93xx/include/mach/uncompress.h
deleted file mode 100644
index e20bcab702b2..000000000000
--- a/arch/arm/mach-ep93xx/include/mach/uncompress.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * arch/arm/mach-ep93xx/include/mach/uncompress.h
- *
- * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
- */
-
-#include <asm/mach-types.h>
-
-static unsigned char __raw_readb(unsigned int ptr)
-{
-	return *((volatile unsigned char *)ptr);
-}
-
-static unsigned int __raw_readl(unsigned int ptr)
-{
-	return *((volatile unsigned int *)ptr);
-}
-
-static void __raw_writeb(unsigned char value, unsigned int ptr)
-{
-	*((volatile unsigned char *)ptr) = value;
-}
-
-static void __raw_writel(unsigned int value, unsigned int ptr)
-{
-	*((volatile unsigned int *)ptr) = value;
-}
-
-#define PHYS_UART_DATA		(CONFIG_DEBUG_UART_PHYS + 0x00)
-#define PHYS_UART_FLAG		(CONFIG_DEBUG_UART_PHYS + 0x18)
-#define UART_FLAG_TXFF		0x20
-
-static inline void putc(int c)
-{
-	int i;
-
-	for (i = 0; i < 10000; i++) {
-		/* Transmit fifo not full? */
-		if (!(__raw_readb(PHYS_UART_FLAG) & UART_FLAG_TXFF))
-			break;
-	}
-
-	__raw_writeb(c, PHYS_UART_DATA);
-}
-
-static inline void flush(void)
-{
-}
-
-
-/*
- * Some bootloaders don't turn off DMA from the ethernet MAC before
- * jumping to linux, which means that we might end up with bits of RX
- * status and packet data scribbled over the uncompressed kernel image.
- * Work around this by resetting the ethernet MAC before we uncompress.
- */
-#define PHYS_ETH_SELF_CTL		0x80010020
-#define ETH_SELF_CTL_RESET		0x00000001
-
-static void ethernet_reset(void)
-{
-	unsigned int v;
-
-	/* Reset the ethernet MAC.  */
-	v = __raw_readl(PHYS_ETH_SELF_CTL);
-	__raw_writel(v | ETH_SELF_CTL_RESET, PHYS_ETH_SELF_CTL);
-
-	/* Wait for reset to finish.  */
-	while (__raw_readl(PHYS_ETH_SELF_CTL) & ETH_SELF_CTL_RESET)
-		;
-}
-
-#define TS72XX_WDT_CONTROL_PHYS_BASE	0x23800000
-#define TS72XX_WDT_FEED_PHYS_BASE	0x23c00000
-#define TS72XX_WDT_FEED_VAL		0x05
-
-static void __maybe_unused ts72xx_watchdog_disable(void)
-{
-	__raw_writeb(TS72XX_WDT_FEED_VAL, TS72XX_WDT_FEED_PHYS_BASE);
-	__raw_writeb(0, TS72XX_WDT_CONTROL_PHYS_BASE);
-}
-
-static void arch_decomp_setup(void)
-{
-	if (machine_is_ts72xx())
-		ts72xx_watchdog_disable();
-	ethernet_reset();
-}