Merge tag 'arm-multiplatform-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARMv4T/v5 multiplatform support from Arnd Bergmann:
 "This series has been 12 years in the making, it mostly finishes the
  work that was started with the founding of Linaro to clean up platform
  support in the kernel.

  The largest change here is a cleanup of the omap1 platform, which is
  the final ARM machine type to get converted to the common-clk
  subsystem. All the omap1 specific drivers are now made independent of
  the mach/*.h headers to allow the platform to be part of a generic
  ARMv4/v5 multiplatform kernel.

  The last bit that enables this support is still missing here while we
  wait for some last dependencies to make it into the mainline kernel
  through other subsystems.

  The s3c24xx, ixp4xx, iop32x, ep93xx and dove platforms were all almost
  at the point of allowing multiplatform kernels, this work gets
  completed here along with a few additional cleanup. At the same time,
  the s3c24xx and s3c64xx are now deprecated and expected to get removed
  in the future.

  The PXA and OMAP1 bits are in a separate branch because of
  dependencies. Once both branches are merged, only the three Intel
  StrongARM platforms (RiscPC, Footbridge/NetWinder and StrongARM1100)
  need separate kernels, and there are no plans to include these"

* tag 'arm-multiplatform-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (61 commits)
  ARM: ixp4xx: Consolidate Kconfig fixing issue
  ARM: versatile: Add missing of_node_put in dcscb_init
  ARM: config: Refresh IXP4xx config after multiplatform
  ARM: omap1: add back omap_set_dma_priority() stub
  ARM: omap: fix missing declaration warnings
  ARM: omap: fix address space warnings from sparse
  ARM: spear: remove include/mach/ subdirectory
  ARM: davinci: remove include/mach/ subdirectory
  ARM: omap2: remove include/mach/ subdirectory
  integrator: remove empty ap_init_early()
  ARM: s3c: fix include path
  MAINTAINERS: omap1: Add Janusz as an additional maintainer
  ARM: omap1: htc_herald: fix typos in comments
  ARM: OMAP1: fix typos in comments
  ARM: OMAP1: clock: Remove noop code
  ARM: OMAP1: clock: Remove unused code
  ARM: OMAP1: clock: Fix UART rate reporting algorithm
  ARM: OMAP1: clock: Fix early UART rate issues
  ARM: OMAP1: Prepare for conversion of OMAP1 clocks to CCF
  ARM: omap1: fix build with no SoC selected
  ...

2 files changed, 90 insertions, 0 deletions

diff --git a/arch/arm/boot/compressed/misc-ep93xx.h b/arch/arm/boot/compressed/misc-ep93xx.h
new file mode 100644
index 000000000000..3dc942589cba
--- /dev/null
+++ b/arch/arm/boot/compressed/misc-ep93xx.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
+ */
+
+#include <asm/mach-types.h>
+
+static inline unsigned int __raw_readl(unsigned int ptr)
+{
+	return *((volatile unsigned int *)ptr);
+}
+
+static inline void __raw_writeb(unsigned char value, unsigned int ptr)
+{
+	*((volatile unsigned char *)ptr) = value;
+}
+
+static inline void __raw_writel(unsigned int value, unsigned int ptr)
+{
+	*((volatile unsigned int *)ptr) = value;
+}
+
+/*
+ * 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 inline void ep93xx_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 inline 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 inline void ep93xx_decomp_setup(void)
+{
+	if (machine_is_ts72xx())
+		ts72xx_watchdog_disable();
+
+	if (machine_is_adssphere() ||
+	    machine_is_edb9301() ||
+	    machine_is_edb9302() ||
+	    machine_is_edb9302a() ||
+	    machine_is_edb9302a() ||
+	    machine_is_edb9307() ||
+	    machine_is_edb9307a() ||
+	    machine_is_edb9307a() ||
+	    machine_is_edb9312() ||
+	    machine_is_edb9315() ||
+	    machine_is_edb9315a() ||
+	    machine_is_edb9315a() ||
+	    machine_is_gesbc9312() ||
+	    machine_is_micro9() ||
+	    machine_is_micro9l() ||
+	    machine_is_micro9m() ||
+	    machine_is_micro9s() ||
+	    machine_is_micro9m() ||
+	    machine_is_micro9l() ||
+	    machine_is_micro9s() ||
+	    machine_is_sim_one() ||
+	    machine_is_snapper_cl15() ||
+	    machine_is_ts72xx() ||
+	    machine_is_bk3() ||
+	    machine_is_vision_ep9307())
+		ep93xx_ethernet_reset();
+}
diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c
index c3c66ff2d696..cb2e069dc73f 100644
--- a/arch/arm/boot/compressed/misc.c
+++ b/arch/arm/boot/compressed/misc.c
@@ -23,6 +23,7 @@ unsigned int __machine_arch_type;
 #include <linux/types.h>
 #include <linux/linkage.h>
 #include "misc.h"
+#include "misc-ep93xx.h"
 
 static void putstr(const char *ptr);
 
@@ -143,6 +144,9 @@ decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p,
 	free_mem_end_ptr	= free_mem_ptr_end_p;
 	__machine_arch_type	= arch_id;
 
+#ifdef CONFIG_ARCH_EP93XX
+	ep93xx_decomp_setup();
+#endif
 	arch_decomp_setup();
 
 	putstr("Uncompressing Linux...");