CRIS: Drop support for the CRIS port

The port was added back in 2000 so it's no longer even a good source
of inspiration for newer ports (if it ever was)

The last SoC (ARTPEC-3) with a CRIS main CPU was launched in 2008.

Coupled with time and working developer board hardware being
in low supply, it's time to drop the port from Linux.

So long and thanks for all the fish!

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

7 files changed, 0 insertions, 1356 deletions

diff --git a/arch/cris/arch-v32/mach-fs/Kconfig b/arch/cris/arch-v32/mach-fs/Kconfig
deleted file mode 100644
index 743ba3bcbaec..000000000000
--- a/arch/cris/arch-v32/mach-fs/Kconfig
+++ /dev/null
@@ -1,198 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-if ETRAXFS
-
-menu "ETRAX FS options"
-       depends on ETRAXFS
-
-config ETRAX_DRAM_VIRTUAL_BASE
-	hex
-	depends on ETRAX_ARCH_V32
-	default "c0000000"
-
-config ETRAX_SERIAL_PORTS
-       int
-       default 4
-
-config ETRAX_MEM_GRP1_CONFIG
-	hex "MEM_GRP1_CONFIG"
-	depends on ETRAX_ARCH_V32
-	default "4044a"
-	help
-	  Waitstates for flash. The default value is suitable for the
-	  standard flashes used in axis products (120 ns).
-
-config ETRAX_MEM_GRP2_CONFIG
-	hex "MEM_GRP2_CONFIG"
-	depends on ETRAX_ARCH_V32
-	default "0"
-	help
-	  Waitstates for SRAM. 0 is a good choice for most Axis products.
-
-config ETRAX_MEM_GRP3_CONFIG
-	hex "MEM_GRP3_CONFIG"
-	depends on ETRAX_ARCH_V32
-	default "0"
-	help
-	  Waitstates for CSP0-3. 0 is a good choice for most Axis products.
-	  It may need to be changed if external devices such as extra
-	  register-mapped LEDs are used.
-
-config ETRAX_MEM_GRP4_CONFIG
-	hex "MEM_GRP4_CONFIG"
-	depends on ETRAX_ARCH_V32
-	default "0"
-	help
-	  Waitstates for CSP4-6. 0 is a good choice for most Axis products.
-
-config ETRAX_SDRAM_GRP0_CONFIG
-	hex "SDRAM_GRP0_CONFIG"
-	depends on ETRAX_ARCH_V32
-	default "336"
-	help
-	  SDRAM configuration for group 0. The value depends on the
-	  hardware configuration. The default value is suitable
-	  for 32 MB organized as two 16 bits chips (e.g. Axis
-	  part number 18550) connected as one 32 bit device (i.e. in
-	  the same group).
-
-config ETRAX_SDRAM_GRP1_CONFIG
-	hex "SDRAM_GRP1_CONFIG"
-	depends on ETRAX_ARCH_V32
-	default "0"
-	help
-	  SDRAM configuration for group 1. The default value is 0
-	  because group 1 is not used in the default configuration,
-	  described in the help for SDRAM_GRP0_CONFIG.
-
-config ETRAX_SDRAM_TIMING
-	hex "SDRAM_TIMING"
-	depends on ETRAX_ARCH_V32
-	default "104a"
-	help
-	  SDRAM timing parameters. The default value is ok for
-	  most hardwares but large SDRAMs may require a faster
-	  refresh (a.k.a 8K refresh). The default value implies
-	  100MHz clock and SDR mode.
-
-config ETRAX_SDRAM_COMMAND
-	hex "SDRAM_COMMAND"
-	depends on ETRAX_ARCH_V32
-	default "0"
-	help
-	  SDRAM command. Should be 0 unless you really know what
-	  you are doing (may be != 0 for unusual address line
-	  mappings such as in a MCM)..
-
-config ETRAX_DEF_GIO_PA_OE
-	hex "GIO_PA_OE"
-	depends on ETRAX_ARCH_V32
-	default "1c"
-	help
-	  Configures the direction of general port A bits.  1 is out, 0 is in.
-	  This is often totally different depending on the product used.
-	  There are some guidelines though - if you know that only LED's are
-	  connected to port PA, then they are usually connected to bits 2-4
-	  and you can therefore use 1c.  On other boards which don't have the
-	  LED's at the general ports, these bits are used for all kinds of
-	  stuff.  If you don't know what to use, it is always safe to put all
-	  as inputs, although floating inputs isn't good.
-
-config ETRAX_DEF_GIO_PA_OUT
-	hex "GIO_PA_OUT"
-	depends on ETRAX_ARCH_V32
-	default "00"
-	help
-	  Configures the initial data for the general port A bits.  Most
-	  products should use 00 here.
-
-config ETRAX_DEF_GIO_PB_OE
-	hex "GIO_PB_OE"
-	depends on ETRAX_ARCH_V32
-	default "00000"
-	help
-	  Configures the direction of general port B bits.  1 is out, 0 is in.
-	  This is often totally different depending on the product used.
-	  There are some guidelines though - if you know that only LED's are
-	  connected to port PA, then they are usually connected to bits 2-4
-	  and you can therefore use 1c.  On other boards which don't have the
-	  LED's at the general ports, these bits are used for all kinds of
-	  stuff.  If you don't know what to use, it is always safe to put all
-	  as inputs, although floating inputs isn't good.
-
-config ETRAX_DEF_GIO_PB_OUT
-	hex "GIO_PB_OUT"
-	depends on ETRAX_ARCH_V32
-	default "00000"
-	help
-	  Configures the initial data for the general port B bits.  Most
-	  products should use 00000 here.
-
-config ETRAX_DEF_GIO_PC_OE
-	hex "GIO_PC_OE"
-	depends on ETRAX_ARCH_V32
-	default "00000"
-	help
-	  Configures the direction of general port C bits.  1 is out, 0 is in.
-	  This is often totally different depending on the product used.
-	  There are some guidelines though - if you know that only LED's are
-	  connected to port PA, then they are usually connected to bits 2-4
-	  and you can therefore use 1c.  On other boards which don't have the
-	  LED's at the general ports, these bits are used for all kinds of
-	  stuff.  If you don't know what to use, it is always safe to put all
-	  as inputs, although floating inputs isn't good.
-
-config ETRAX_DEF_GIO_PC_OUT
-	hex "GIO_PC_OUT"
-	depends on ETRAX_ARCH_V32
-	default "00000"
-	help
-	  Configures the initial data for the general port C bits.  Most
-	  products should use 00000 here.
-
-config ETRAX_DEF_GIO_PD_OE
-	hex "GIO_PD_OE"
-	depends on ETRAX_ARCH_V32
-	default "00000"
-	help
-	  Configures the direction of general port D bits.  1 is out, 0 is in.
-	  This is often totally different depending on the product used.
-	  There are some guidelines though - if you know that only LED's are
-	  connected to port PA, then they are usually connected to bits 2-4
-	  and you can therefore use 1c.  On other boards which don't have the
-	  LED's at the general ports, these bits are used for all kinds of
-	  stuff.  If you don't know what to use, it is always safe to put all
-	  as inputs, although floating inputs isn't good.
-
-config ETRAX_DEF_GIO_PD_OUT
-	hex "GIO_PD_OUT"
-	depends on ETRAX_ARCH_V32
-	default "00000"
-	help
-	  Configures the initial data for the general port D bits.  Most
-	  products should use 00000 here.
-
-config ETRAX_DEF_GIO_PE_OE
-	hex "GIO_PE_OE"
-	depends on ETRAX_ARCH_V32
-	default "00000"
-	help
-	  Configures the direction of general port E bits.  1 is out, 0 is in.
-	  This is often totally different depending on the product used.
-	  There are some guidelines though - if you know that only LED's are
-	  connected to port PA, then they are usually connected to bits 2-4
-	  and you can therefore use 1c.  On other boards which don't have the
-	  LED's at the general ports, these bits are used for all kinds of
-	  stuff.  If you don't know what to use, it is always safe to put all
-	  as inputs, although floating inputs isn't good.
-
-config ETRAX_DEF_GIO_PE_OUT
-	hex "GIO_PE_OUT"
-	depends on ETRAX_ARCH_V32
-	default "00000"
-	help
-	  Configures the initial data for the general port E bits.  Most
-	  products should use 00000 here.
-
-endmenu
-
-endif
diff --git a/arch/cris/arch-v32/mach-fs/Makefile b/arch/cris/arch-v32/mach-fs/Makefile
deleted file mode 100644
index 0cc6eebacbed..000000000000
--- a/arch/cris/arch-v32/mach-fs/Makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-#
-# Makefile for the linux kernel.
-#
-
-obj-y   := dma.o pinmux.o arbiter.o
-
-clean:
-
diff --git a/arch/cris/arch-v32/mach-fs/arbiter.c b/arch/cris/arch-v32/mach-fs/arbiter.c
deleted file mode 100644
index c4750d97e46c..000000000000
--- a/arch/cris/arch-v32/mach-fs/arbiter.c
+++ /dev/null
@@ -1,405 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Memory arbiter functions. Allocates bandwidth through the
- * arbiter and sets up arbiter breakpoints.
- *
- * The algorithm first assigns slots to the clients that has specified
- * bandwidth (e.g. ethernet) and then the remaining slots are divided
- * on all the active clients.
- *
- * Copyright (c) 2004-2007 Axis Communications AB.
- */
-
-#include <hwregs/reg_map.h>
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/marb_defs.h>
-#include <arbiter.h>
-#include <hwregs/intr_vect.h>
-#include <linux/interrupt.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/spinlock.h>
-#include <asm/io.h>
-#include <asm/irq_regs.h>
-
-struct crisv32_watch_entry {
-	unsigned long instance;
-	watch_callback *cb;
-	unsigned long start;
-	unsigned long end;
-	int used;
-};
-
-#define NUMBER_OF_BP 4
-#define NBR_OF_CLIENTS 14
-#define NBR_OF_SLOTS 64
-#define SDRAM_BANDWIDTH 100000000	/* Some kind of expected value */
-#define INTMEM_BANDWIDTH 400000000
-#define NBR_OF_REGIONS 2
-
-static struct crisv32_watch_entry watches[NUMBER_OF_BP] = {
-	{regi_marb_bp0},
-	{regi_marb_bp1},
-	{regi_marb_bp2},
-	{regi_marb_bp3}
-};
-
-static u8 requested_slots[NBR_OF_REGIONS][NBR_OF_CLIENTS];
-static u8 active_clients[NBR_OF_REGIONS][NBR_OF_CLIENTS];
-static int max_bandwidth[NBR_OF_REGIONS] =
-    { SDRAM_BANDWIDTH, INTMEM_BANDWIDTH };
-
-DEFINE_SPINLOCK(arbiter_lock);
-
-static irqreturn_t crisv32_arbiter_irq(int irq, void *dev_id);
-
-/*
- * "I'm the arbiter, I know the score.
- *  From square one I'll be watching all 64."
- * (memory arbiter slots, that is)
- *
- *  Or in other words:
- * Program the memory arbiter slots for "region" according to what's
- * in requested_slots[] and active_clients[], while minimizing
- * latency. A caller may pass a non-zero positive amount for
- * "unused_slots", which must then be the unallocated, remaining
- * number of slots, free to hand out to any client.
- */
-
-static void crisv32_arbiter_config(int region, int unused_slots)
-{
-	int slot;
-	int client;
-	int interval = 0;
-
-	/*
-	 * This vector corresponds to the hardware arbiter slots (see
-	 * the hardware documentation for semantics). We initialize
-	 * each slot with a suitable sentinel value outside the valid
-	 * range {0 .. NBR_OF_CLIENTS - 1} and replace them with
-	 * client indexes. Then it's fed to the hardware.
-	 */
-	s8 val[NBR_OF_SLOTS];
-
-	for (slot = 0; slot < NBR_OF_SLOTS; slot++)
-		val[slot] = -1;
-
-	for (client = 0; client < NBR_OF_CLIENTS; client++) {
-		int pos;
-		/* Allocate the requested non-zero number of slots, but
-		 * also give clients with zero-requests one slot each
-		 * while stocks last. We do the latter here, in client
-		 * order. This makes sure zero-request clients are the
-		 * first to get to any spare slots, else those slots
-		 * could, when bandwidth is allocated close to the limit,
-		 * all be allocated to low-index non-zero-request clients
-		 * in the default-fill loop below. Another positive but
-		 * secondary effect is a somewhat better spread of the
-		 * zero-bandwidth clients in the vector, avoiding some of
-		 * the latency that could otherwise be caused by the
-		 * partitioning of non-zero-bandwidth clients at low
-		 * indexes and zero-bandwidth clients at high
-		 * indexes. (Note that this spreading can only affect the
-		 * unallocated bandwidth.)  All the above only matters for
-		 * memory-intensive situations, of course.
-		 */
-		if (!requested_slots[region][client]) {
-			/*
-			 * Skip inactive clients. Also skip zero-slot
-			 * allocations in this pass when there are no known
-			 * free slots.
-			 */
-			if (!active_clients[region][client]
-			    || unused_slots <= 0)
-				continue;
-
-			unused_slots--;
-
-			/* Only allocate one slot for this client. */
-			interval = NBR_OF_SLOTS;
-		} else
-			interval =
-			    NBR_OF_SLOTS / requested_slots[region][client];
-
-		pos = 0;
-		while (pos < NBR_OF_SLOTS) {
-			if (val[pos] >= 0)
-				pos++;
-			else {
-				val[pos] = client;
-				pos += interval;
-			}
-		}
-	}
-
-	client = 0;
-	for (slot = 0; slot < NBR_OF_SLOTS; slot++) {
-		/*
-		 * Allocate remaining slots in round-robin
-		 * client-number order for active clients. For this
-		 * pass, we ignore requested bandwidth and previous
-		 * allocations.
-		 */
-		if (val[slot] < 0) {
-			int first = client;
-			while (!active_clients[region][client]) {
-				client = (client + 1) % NBR_OF_CLIENTS;
-				if (client == first)
-					break;
-			}
-			val[slot] = client;
-			client = (client + 1) % NBR_OF_CLIENTS;
-		}
-		if (region == EXT_REGION)
-			REG_WR_INT_VECT(marb, regi_marb, rw_ext_slots, slot,
-					val[slot]);
-		else if (region == INT_REGION)
-			REG_WR_INT_VECT(marb, regi_marb, rw_int_slots, slot,
-					val[slot]);
-	}
-}
-
-extern char _stext[], _etext[];
-
-static void crisv32_arbiter_init(void)
-{
-	static int initialized;
-
-	if (initialized)
-		return;
-
-	initialized = 1;
-
-	/*
-	 * CPU caches are always set to active, but with zero
-	 * bandwidth allocated. It should be ok to allocate zero
-	 * bandwidth for the caches, because DMA for other channels
-	 * will supposedly finish, once their programmed amount is
-	 * done, and then the caches will get access according to the
-	 * "fixed scheme" for unclaimed slots. Though, if for some
-	 * use-case somewhere, there's a maximum CPU latency for
-	 * e.g. some interrupt, we have to start allocating specific
-	 * bandwidth for the CPU caches too.
-	 */
-	active_clients[EXT_REGION][10] = active_clients[EXT_REGION][11] = 1;
-	crisv32_arbiter_config(EXT_REGION, 0);
-	crisv32_arbiter_config(INT_REGION, 0);
-
-	if (request_irq(MEMARB_INTR_VECT, crisv32_arbiter_irq, 0,
-			"arbiter", NULL))
-		printk(KERN_ERR "Couldn't allocate arbiter IRQ\n");
-
-#ifndef CONFIG_ETRAX_KGDB
-	/* Global watch for writes to kernel text segment. */
-	crisv32_arbiter_watch(virt_to_phys(_stext), _etext - _stext,
-			      arbiter_all_clients, arbiter_all_write, NULL);
-#endif
-}
-
-/* Main entry for bandwidth allocation. */
-
-int crisv32_arbiter_allocate_bandwidth(int client, int region,
-				       unsigned long bandwidth)
-{
-	int i;
-	int total_assigned = 0;
-	int total_clients = 0;
-	int req;
-
-	crisv32_arbiter_init();
-
-	for (i = 0; i < NBR_OF_CLIENTS; i++) {
-		total_assigned += requested_slots[region][i];
-		total_clients += active_clients[region][i];
-	}
-
-	/* Avoid division by 0 for 0-bandwidth requests. */
-	req = bandwidth == 0
-	    ? 0 : NBR_OF_SLOTS / (max_bandwidth[region] / bandwidth);
-
-	/*
-	 * We make sure that there are enough slots only for non-zero
-	 * requests. Requesting 0 bandwidth *may* allocate slots,
-	 * though if all bandwidth is allocated, such a client won't
-	 * get any and will have to rely on getting memory access
-	 * according to the fixed scheme that's the default when one
-	 * of the slot-allocated clients doesn't claim their slot.
-	 */
-	if (total_assigned + req > NBR_OF_SLOTS)
-		return -ENOMEM;
-
-	active_clients[region][client] = 1;
-	requested_slots[region][client] = req;
-	crisv32_arbiter_config(region, NBR_OF_SLOTS - total_assigned);
-
-	return 0;
-}
-
-/*
- * Main entry for bandwidth deallocation.
- *
- * Strictly speaking, for a somewhat constant set of clients where
- * each client gets a constant bandwidth and is just enabled or
- * disabled (somewhat dynamically), no action is necessary here to
- * avoid starvation for non-zero-allocation clients, as the allocated
- * slots will just be unused. However, handing out those unused slots
- * to active clients avoids needless latency if the "fixed scheme"
- * would give unclaimed slots to an eager low-index client.
- */
-
-void crisv32_arbiter_deallocate_bandwidth(int client, int region)
-{
-	int i;
-	int total_assigned = 0;
-
-	requested_slots[region][client] = 0;
-	active_clients[region][client] = 0;
-
-	for (i = 0; i < NBR_OF_CLIENTS; i++)
-		total_assigned += requested_slots[region][i];
-
-	crisv32_arbiter_config(region, NBR_OF_SLOTS - total_assigned);
-}
-
-int crisv32_arbiter_watch(unsigned long start, unsigned long size,
-			  unsigned long clients, unsigned long accesses,
-			  watch_callback *cb)
-{
-	int i;
-
-	crisv32_arbiter_init();
-
-	if (start > 0x80000000) {
-		printk(KERN_ERR "Arbiter: %lX doesn't look like a "
-			"physical address", start);
-		return -EFAULT;
-	}
-
-	spin_lock(&arbiter_lock);
-
-	for (i = 0; i < NUMBER_OF_BP; i++) {
-		if (!watches[i].used) {
-			reg_marb_rw_intr_mask intr_mask =
-			    REG_RD(marb, regi_marb, rw_intr_mask);
-
-			watches[i].used = 1;
-			watches[i].start = start;
-			watches[i].end = start + size;
-			watches[i].cb = cb;
-
-			REG_WR_INT(marb_bp, watches[i].instance, rw_first_addr,
-				   watches[i].start);
-			REG_WR_INT(marb_bp, watches[i].instance, rw_last_addr,
-				   watches[i].end);
-			REG_WR_INT(marb_bp, watches[i].instance, rw_op,
-				   accesses);
-			REG_WR_INT(marb_bp, watches[i].instance, rw_clients,
-				   clients);
-
-			if (i == 0)
-				intr_mask.bp0 = regk_marb_yes;
-			else if (i == 1)
-				intr_mask.bp1 = regk_marb_yes;
-			else if (i == 2)
-				intr_mask.bp2 = regk_marb_yes;
-			else if (i == 3)
-				intr_mask.bp3 = regk_marb_yes;
-
-			REG_WR(marb, regi_marb, rw_intr_mask, intr_mask);
-			spin_unlock(&arbiter_lock);
-
-			return i;
-		}
-	}
-	spin_unlock(&arbiter_lock);
-	return -ENOMEM;
-}
-
-int crisv32_arbiter_unwatch(int id)
-{
-	reg_marb_rw_intr_mask intr_mask = REG_RD(marb, regi_marb, rw_intr_mask);
-
-	crisv32_arbiter_init();
-
-	spin_lock(&arbiter_lock);
-
-	if ((id < 0) || (id >= NUMBER_OF_BP) || (!watches[id].used)) {
-		spin_unlock(&arbiter_lock);
-		return -EINVAL;
-	}
-
-	memset(&watches[id], 0, sizeof(struct crisv32_watch_entry));
-
-	if (id == 0)
-		intr_mask.bp0 = regk_marb_no;
-	else if (id == 1)
-		intr_mask.bp1 = regk_marb_no;
-	else if (id == 2)
-		intr_mask.bp2 = regk_marb_no;
-	else if (id == 3)
-		intr_mask.bp3 = regk_marb_no;
-
-	REG_WR(marb, regi_marb, rw_intr_mask, intr_mask);
-
-	spin_unlock(&arbiter_lock);
-	return 0;
-}
-
-extern void show_registers(struct pt_regs *regs);
-
-static irqreturn_t crisv32_arbiter_irq(int irq, void *dev_id)
-{
-	reg_marb_r_masked_intr masked_intr =
-	    REG_RD(marb, regi_marb, r_masked_intr);
-	reg_marb_bp_r_brk_clients r_clients;
-	reg_marb_bp_r_brk_addr r_addr;
-	reg_marb_bp_r_brk_op r_op;
-	reg_marb_bp_r_brk_first_client r_first;
-	reg_marb_bp_r_brk_size r_size;
-	reg_marb_bp_rw_ack ack = { 0 };
-	reg_marb_rw_ack_intr ack_intr = {
-		.bp0 = 1, .bp1 = 1, .bp2 = 1, .bp3 = 1
-	};
-	struct crisv32_watch_entry *watch;
-
-	if (masked_intr.bp0) {
-		watch = &watches[0];
-		ack_intr.bp0 = regk_marb_yes;
-	} else if (masked_intr.bp1) {
-		watch = &watches[1];
-		ack_intr.bp1 = regk_marb_yes;
-	} else if (masked_intr.bp2) {
-		watch = &watches[2];
-		ack_intr.bp2 = regk_marb_yes;
-	} else if (masked_intr.bp3) {
-		watch = &watches[3];
-		ack_intr.bp3 = regk_marb_yes;
-	} else {
-		return IRQ_NONE;
-	}
-
-	/* Retrieve all useful information and print it. */
-	r_clients = REG_RD(marb_bp, watch->instance, r_brk_clients);
-	r_addr = REG_RD(marb_bp, watch->instance, r_brk_addr);
-	r_op = REG_RD(marb_bp, watch->instance, r_brk_op);
-	r_first = REG_RD(marb_bp, watch->instance, r_brk_first_client);
-	r_size = REG_RD(marb_bp, watch->instance, r_brk_size);
-
-	printk(KERN_INFO "Arbiter IRQ\n");
-	printk(KERN_INFO "Clients %X addr %X op %X first %X size %X\n",
-	       REG_TYPE_CONV(int, reg_marb_bp_r_brk_clients, r_clients),
-	       REG_TYPE_CONV(int, reg_marb_bp_r_brk_addr, r_addr),
-	       REG_TYPE_CONV(int, reg_marb_bp_r_brk_op, r_op),
-	       REG_TYPE_CONV(int, reg_marb_bp_r_brk_first_client, r_first),
-	       REG_TYPE_CONV(int, reg_marb_bp_r_brk_size, r_size));
-
-	REG_WR(marb_bp, watch->instance, rw_ack, ack);
-	REG_WR(marb, regi_marb, rw_ack_intr, ack_intr);
-
-	printk(KERN_INFO "IRQ occurred at %lX\n", get_irq_regs()->erp);
-
-	if (watch->cb)
-		watch->cb();
-
-	return IRQ_HANDLED;
-}
diff --git a/arch/cris/arch-v32/mach-fs/dma.c b/arch/cris/arch-v32/mach-fs/dma.c
deleted file mode 100644
index c0347a4f8c65..000000000000
--- a/arch/cris/arch-v32/mach-fs/dma.c
+++ /dev/null
@@ -1,229 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* Wrapper for DMA channel allocator that starts clocks etc */
-
-#include <linux/kernel.h>
-#include <linux/spinlock.h>
-#include <asm/dma.h>
-#include <hwregs/reg_map.h>
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/marb_defs.h>
-#include <hwregs/config_defs.h>
-#include <hwregs/strmux_defs.h>
-#include <linux/errno.h>
-#include <mach/arbiter.h>
-
-static char used_dma_channels[MAX_DMA_CHANNELS];
-static const char *used_dma_channels_users[MAX_DMA_CHANNELS];
-
-static DEFINE_SPINLOCK(dma_lock);
-
-int crisv32_request_dma(unsigned int dmanr, const char *device_id,
-			unsigned options, unsigned int bandwidth,
-			enum dma_owner owner)
-{
-	unsigned long flags;
-	reg_config_rw_clk_ctrl clk_ctrl;
-	reg_strmux_rw_cfg strmux_cfg;
-
-	if (crisv32_arbiter_allocate_bandwidth(dmanr,
-					       options & DMA_INT_MEM ?
-					       INT_REGION : EXT_REGION,
-					       bandwidth))
-		return -ENOMEM;
-
-	spin_lock_irqsave(&dma_lock, flags);
-
-	if (used_dma_channels[dmanr]) {
-		spin_unlock_irqrestore(&dma_lock, flags);
-		if (options & DMA_VERBOSE_ON_ERROR) {
-			printk(KERN_ERR "Failed to request DMA %i for %s, "
-				"already allocated by %s\n",
-				dmanr,
-				device_id,
-				used_dma_channels_users[dmanr]);
-		}
-		if (options & DMA_PANIC_ON_ERROR)
-			panic("request_dma error!");
-		return -EBUSY;
-	}
-	clk_ctrl = REG_RD(config, regi_config, rw_clk_ctrl);
-	strmux_cfg = REG_RD(strmux, regi_strmux, rw_cfg);
-
-	switch (dmanr) {
-	case 0:
-	case 1:
-		clk_ctrl.dma01_eth0 = 1;
-		break;
-	case 2:
-	case 3:
-		clk_ctrl.dma23 = 1;
-		break;
-	case 4:
-	case 5:
-		clk_ctrl.dma45 = 1;
-		break;
-	case 6:
-	case 7:
-		clk_ctrl.dma67 = 1;
-		break;
-	case 8:
-	case 9:
-		clk_ctrl.dma89_strcop = 1;
-		break;
-#if MAX_DMA_CHANNELS-1 != 9
-#error Check dma.c
-#endif
-	default:
-		spin_unlock_irqrestore(&dma_lock, flags);
-		if (options & DMA_VERBOSE_ON_ERROR) {
-			printk(KERN_ERR "Failed to request DMA %i for %s, "
-				"only 0-%i valid)\n",
-				dmanr, device_id, MAX_DMA_CHANNELS - 1);
-		}
-
-		if (options & DMA_PANIC_ON_ERROR)
-			panic("request_dma error!");
-		return -EINVAL;
-	}
-
-	switch (owner) {
-	case dma_eth0:
-		if (dmanr == 0)
-			strmux_cfg.dma0 = regk_strmux_eth0;
-		else if (dmanr == 1)
-			strmux_cfg.dma1 = regk_strmux_eth0;
-		else
-			panic("Invalid DMA channel for eth0\n");
-		break;
-	case dma_eth1:
-		if (dmanr == 6)
-			strmux_cfg.dma6 = regk_strmux_eth1;
-		else if (dmanr == 7)
-			strmux_cfg.dma7 = regk_strmux_eth1;
-		else
-			panic("Invalid DMA channel for eth1\n");
-		break;
-	case dma_iop0:
-		if (dmanr == 2)
-			strmux_cfg.dma2 = regk_strmux_iop0;
-		else if (dmanr == 3)
-			strmux_cfg.dma3 = regk_strmux_iop0;
-		else
-			panic("Invalid DMA channel for iop0\n");
-		break;
-	case dma_iop1:
-		if (dmanr == 4)
-			strmux_cfg.dma4 = regk_strmux_iop1;
-		else if (dmanr == 5)
-			strmux_cfg.dma5 = regk_strmux_iop1;
-		else
-			panic("Invalid DMA channel for iop1\n");
-		break;
-	case dma_ser0:
-		if (dmanr == 6)
-			strmux_cfg.dma6 = regk_strmux_ser0;
-		else if (dmanr == 7)
-			strmux_cfg.dma7 = regk_strmux_ser0;
-		else
-			panic("Invalid DMA channel for ser0\n");
-		break;
-	case dma_ser1:
-		if (dmanr == 4)
-			strmux_cfg.dma4 = regk_strmux_ser1;
-		else if (dmanr == 5)
-			strmux_cfg.dma5 = regk_strmux_ser1;
-		else
-			panic("Invalid DMA channel for ser1\n");
-		break;
-	case dma_ser2:
-		if (dmanr == 2)
-			strmux_cfg.dma2 = regk_strmux_ser2;
-		else if (dmanr == 3)
-			strmux_cfg.dma3 = regk_strmux_ser2;
-		else
-			panic("Invalid DMA channel for ser2\n");
-		break;
-	case dma_ser3:
-		if (dmanr == 8)
-			strmux_cfg.dma8 = regk_strmux_ser3;
-		else if (dmanr == 9)
-			strmux_cfg.dma9 = regk_strmux_ser3;
-		else
-			panic("Invalid DMA channel for ser3\n");
-		break;
-	case dma_sser0:
-		if (dmanr == 4)
-			strmux_cfg.dma4 = regk_strmux_sser0;
-		else if (dmanr == 5)
-			strmux_cfg.dma5 = regk_strmux_sser0;
-		else
-			panic("Invalid DMA channel for sser0\n");
-		break;
-	case dma_sser1:
-		if (dmanr == 6)
-			strmux_cfg.dma6 = regk_strmux_sser1;
-		else if (dmanr == 7)
-			strmux_cfg.dma7 = regk_strmux_sser1;
-		else
-			panic("Invalid DMA channel for sser1\n");
-		break;
-	case dma_ata:
-		if (dmanr == 2)
-			strmux_cfg.dma2 = regk_strmux_ata;
-		else if (dmanr == 3)
-			strmux_cfg.dma3 = regk_strmux_ata;
-		else
-			panic("Invalid DMA channel for ata\n");
-		break;
-	case dma_strp:
-		if (dmanr == 8)
-			strmux_cfg.dma8 = regk_strmux_strcop;
-		else if (dmanr == 9)
-			strmux_cfg.dma9 = regk_strmux_strcop;
-		else
-			panic("Invalid DMA channel for strp\n");
-		break;
-	case dma_ext0:
-		if (dmanr == 6)
-			strmux_cfg.dma6 = regk_strmux_ext0;
-		else
-			panic("Invalid DMA channel for ext0\n");
-		break;
-	case dma_ext1:
-		if (dmanr == 7)
-			strmux_cfg.dma7 = regk_strmux_ext1;
-		else
-			panic("Invalid DMA channel for ext1\n");
-		break;
-	case dma_ext2:
-		if (dmanr == 2)
-			strmux_cfg.dma2 = regk_strmux_ext2;
-		else if (dmanr == 8)
-			strmux_cfg.dma8 = regk_strmux_ext2;
-		else
-			panic("Invalid DMA channel for ext2\n");
-		break;
-	case dma_ext3:
-		if (dmanr == 3)
-			strmux_cfg.dma3 = regk_strmux_ext3;
-		else if (dmanr == 9)
-			strmux_cfg.dma9 = regk_strmux_ext2;
-		else
-			panic("Invalid DMA channel for ext2\n");
-		break;
-	}
-
-	used_dma_channels[dmanr] = 1;
-	used_dma_channels_users[dmanr] = device_id;
-	REG_WR(config, regi_config, rw_clk_ctrl, clk_ctrl);
-	REG_WR(strmux, regi_strmux, rw_cfg, strmux_cfg);
-	spin_unlock_irqrestore(&dma_lock, flags);
-	return 0;
-}
-
-void crisv32_free_dma(unsigned int dmanr)
-{
-	spin_lock(&dma_lock);
-	used_dma_channels[dmanr] = 0;
-	spin_unlock(&dma_lock);
-}
diff --git a/arch/cris/arch-v32/mach-fs/dram_init.S b/arch/cris/arch-v32/mach-fs/dram_init.S
deleted file mode 100644
index e1a01fa4c272..000000000000
--- a/arch/cris/arch-v32/mach-fs/dram_init.S
+++ /dev/null
@@ -1,117 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * DRAM/SDRAM initialization - alter with care
- * This file is intended to be included from other assembler files
- *
- * Note: This file may not modify r8 or r9 because they are used to
- * carry information from the decompressor to the kernel
- *
- * Copyright (C) 2000-2007 Axis Communications AB
- *
- * Authors:  Mikael Starvik <starvik@axis.com>
- */
-
-/* Just to be certain the config file is included, we include it here
- * explicitly instead of depending on it being included in the file that
- * uses this code.
- */
-
-#include <hwregs/asm/reg_map_asm.h>
-#include <hwregs/asm/bif_core_defs_asm.h>
-
-	;; WARNING! The registers r8 and r9 are used as parameters carrying
-	;; information from the decompressor (if the kernel was compressed).
-	;; They should not be used in the code below.
-
-	; Refer to BIF MDS for a description of SDRAM initialization
-
-	; Bank configuration
-	move.d   REG_ADDR(bif_core, regi_bif_core, rw_sdram_cfg_grp0), $r0
-	move.d   CONFIG_ETRAX_SDRAM_GRP0_CONFIG, $r1
-	move.d   $r1, [$r0]
-	move.d   REG_ADDR(bif_core, regi_bif_core, rw_sdram_cfg_grp1), $r0
-	move.d   CONFIG_ETRAX_SDRAM_GRP1_CONFIG, $r1
-	move.d   $r1, [$r0]
-
-	; Calculate value of mrs_data
-	; CAS latency = 2 && bus_width = 32 => 0x40
-	; CAS latency = 3 && bus_width = 32 => 0x60
-	; CAS latency = 2 && bus_width = 16 => 0x20
-	; CAS latency = 3 && bus_width = 16 => 0x30
-
-	; Check if value is already supplied in kernel config
-	move.d   CONFIG_ETRAX_SDRAM_COMMAND, $r2
-	bne	 _set_timing
-	nop
-
-	move.d   0x40, $r4       ; Assume 32 bits and CAS latency = 2
-	move.d   CONFIG_ETRAX_SDRAM_TIMING, $r1
-	and.d    0x07, $r1       ; Get CAS latency
-	cmpq	 2, $r1		 ; CL = 2 ?
-	beq	 _bw_check
-	nop
-	move.d   0x60, $r4
-
-_bw_check:
-	; Assume that group 0 width is equal to group 1. This assumption
-	; is wrong for a group 1 only hardware (such as the grand old
-	; StorPoint+).
-	move.d   CONFIG_ETRAX_SDRAM_GRP0_CONFIG, $r1
-	and.d    0x200, $r1	; DRAM width is bit 9
-	beq      _set_timing
-	lslq	 2, $r4		;  mrs_data starts at bit 2
-	lsrq     1, $r4		;  16 bits. Shift down value.
-
-	; Set timing parameters (refresh off to avoid Guinness TR 83)
-_set_timing:
-	move.d   CONFIG_ETRAX_SDRAM_TIMING, $r1
-	and.d    ~(3 << reg_bif_core_rw_sdram_timing___ref___lsb), $r1
-	move.d   REG_ADDR(bif_core, regi_bif_core, rw_sdram_timing), $r0
-	move.d   $r1, [$r0]
-
-	; Issue NOP command
-	move.d REG_ADDR(bif_core, regi_bif_core, rw_sdram_cmd), $r5
-	moveq regk_bif_core_nop, $r1
-	move.d $r1, [$r5]
-
-	; Wait 200us
-	move.d   10000, $r2
-1:	bne      1b
-	subq     1, $r2
-
-	; Issue initialization command sequence
-	lapc     _sdram_commands_start, $r2
-	lapc     _sdram_commands_end,  $r3
-1:	clear.d  $r6
-	move.b   [$r2+], $r6	; Load command
-	or.d     $r4, $r6	; Add calculated mrs
-	move.d   $r6, [$r5]	; Write rw_sdram_cmd
-	; Wait 80 ns between each command
-	move.d	 4000, $r7
-2:	bne	 2b
-	subq	 1, $r7
-	cmp.d    $r2, $r3	; Last command?
-	bne      1b
-	nop
-
-	; Start refresh
-	move.d   CONFIG_ETRAX_SDRAM_TIMING, $r1
-	move.d   REG_ADDR(bif_core, regi_bif_core, rw_sdram_timing), $r0
-	move.d   $r1, [$r0]
-
-	; Initialization finished
-	ba       _sdram_commands_end
-	nop
-
-_sdram_commands_start:
-	.byte   regk_bif_core_pre ; Precharge
-	.byte   regk_bif_core_ref ; refresh
-	.byte   regk_bif_core_ref ; refresh
-	.byte   regk_bif_core_ref ; refresh
-	.byte   regk_bif_core_ref ; refresh
-	.byte   regk_bif_core_ref ; refresh
-	.byte   regk_bif_core_ref ; refresh
-	.byte   regk_bif_core_ref ; refresh
-	.byte   regk_bif_core_ref ; refresh
-	.byte   regk_bif_core_mrs ; mrs
-_sdram_commands_end:
diff --git a/arch/cris/arch-v32/mach-fs/hw_settings.S b/arch/cris/arch-v32/mach-fs/hw_settings.S
deleted file mode 100644
index 7fbadcc48c0c..000000000000
--- a/arch/cris/arch-v32/mach-fs/hw_settings.S
+++ /dev/null
@@ -1,71 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * This table is used by some tools to extract hardware parameters.
- * The table should be included in the kernel and the decompressor.
- * Don't forget to update the tools if you change this table.
- *
- * Copyright (C) 2001-2007 Axis Communications AB
- *
- * Authors:  Mikael Starvik <starvik@axis.com>
- */
-
-#include <hwregs/asm/reg_map_asm.h>
-#include <hwregs/asm/bif_core_defs_asm.h>
-#include <hwregs/asm/gio_defs_asm.h>
-
-	.ascii "HW_PARAM_MAGIC" ; Magic number
-	.dword 0xc0004000	; Kernel start address
-
-	; Debug port
-#ifdef CONFIG_ETRAX_DEBUG_PORT0
-	.dword 0
-#elif defined(CONFIG_ETRAX_DEBUG_PORT1)
-	.dword 1
-#elif defined(CONFIG_ETRAX_DEBUG_PORT2)
-	.dword 2
-#elif defined(CONFIG_ETRAX_DEBUG_PORT3)
-	.dword 3
-#else
-	.dword 4 ; No debug
-#endif
-
-	; Register values
-	.dword REG_ADDR(bif_core, regi_bif_core, rw_grp1_cfg)
-	.dword CONFIG_ETRAX_MEM_GRP1_CONFIG
-	.dword REG_ADDR(bif_core, regi_bif_core, rw_grp2_cfg)
-	.dword CONFIG_ETRAX_MEM_GRP2_CONFIG
-	.dword REG_ADDR(bif_core, regi_bif_core, rw_grp3_cfg)
-	.dword CONFIG_ETRAX_MEM_GRP3_CONFIG
-	.dword REG_ADDR(bif_core, regi_bif_core, rw_grp4_cfg)
-	.dword CONFIG_ETRAX_MEM_GRP4_CONFIG
-	.dword REG_ADDR(bif_core, regi_bif_core, rw_sdram_cfg_grp0)
-	.dword CONFIG_ETRAX_SDRAM_GRP0_CONFIG
-	.dword REG_ADDR(bif_core, regi_bif_core, rw_sdram_cfg_grp1)
-	.dword CONFIG_ETRAX_SDRAM_GRP1_CONFIG
-	.dword REG_ADDR(bif_core, regi_bif_core, rw_sdram_timing)
-	.dword CONFIG_ETRAX_SDRAM_TIMING
-	.dword REG_ADDR(bif_core, regi_bif_core, rw_sdram_cmd)
-	.dword CONFIG_ETRAX_SDRAM_COMMAND
-
-	.dword REG_ADDR(gio, regi_gio, rw_pa_dout)
-	.dword CONFIG_ETRAX_DEF_GIO_PA_OUT
-	.dword REG_ADDR(gio, regi_gio, rw_pa_oe)
-	.dword CONFIG_ETRAX_DEF_GIO_PA_OE
-	.dword REG_ADDR(gio, regi_gio, rw_pb_dout)
-	.dword CONFIG_ETRAX_DEF_GIO_PB_OUT
-	.dword REG_ADDR(gio, regi_gio, rw_pb_oe)
-	.dword CONFIG_ETRAX_DEF_GIO_PB_OE
-	.dword REG_ADDR(gio, regi_gio, rw_pc_dout)
-	.dword CONFIG_ETRAX_DEF_GIO_PC_OUT
-	.dword REG_ADDR(gio, regi_gio, rw_pc_oe)
-	.dword CONFIG_ETRAX_DEF_GIO_PC_OE
-	.dword REG_ADDR(gio, regi_gio, rw_pd_dout)
-	.dword CONFIG_ETRAX_DEF_GIO_PD_OUT
-	.dword REG_ADDR(gio, regi_gio, rw_pd_oe)
-	.dword CONFIG_ETRAX_DEF_GIO_PD_OE
-	.dword REG_ADDR(gio, regi_gio, rw_pe_dout)
-	.dword CONFIG_ETRAX_DEF_GIO_PE_OUT
-	.dword REG_ADDR(gio, regi_gio, rw_pe_oe)
-	.dword CONFIG_ETRAX_DEF_GIO_PE_OE
-
-	.dword 0 ; No more register values
diff --git a/arch/cris/arch-v32/mach-fs/pinmux.c b/arch/cris/arch-v32/mach-fs/pinmux.c
deleted file mode 100644
index a0b2f101003a..000000000000
--- a/arch/cris/arch-v32/mach-fs/pinmux.c
+++ /dev/null
@@ -1,328 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Allocator for I/O pins. All pins are allocated to GPIO at bootup.
- * Unassigned pins and GPIO pins can be allocated to a fixed interface