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>

1 files changed, 0 insertions, 230 deletions

diff --git a/arch/cris/arch-v32/drivers/iop_fw_load.c b/arch/cris/arch-v32/drivers/iop_fw_load.c
deleted file mode 100644
index 2f8ea0f7a63c..000000000000
--- a/arch/cris/arch-v32/drivers/iop_fw_load.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/*
- * Firmware loader for ETRAX FS IO-Processor
- *
- * Copyright (C) 2004  Axis Communications AB
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/device.h>
-#include <linux/firmware.h>
-
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/reg_map.h>
-#include <hwregs/iop/iop_reg_space.h>
-#include <hwregs/iop/iop_mpu_macros.h>
-#include <hwregs/iop/iop_mpu_defs.h>
-#include <hwregs/iop/iop_spu_defs.h>
-#include <hwregs/iop/iop_sw_cpu_defs.h>
-
-#define IOP_TIMEOUT 100
-
-#error "This driver is broken with regard to its driver core usage."
-#error "Please contact <greg@kroah.com> for details on how to fix it properly."
-
-static struct device iop_spu_device[2] = {
-	{ .init_name =     "iop-spu0", },
-	{ .init_name =     "iop-spu1", },
-};
-
-static struct device iop_mpu_device = {
-	.init_name =       "iop-mpu",
-};
-
-static int wait_mpu_idle(void)
-{
-	reg_iop_mpu_r_stat mpu_stat;
-	unsigned int timeout = IOP_TIMEOUT;
-
-	do {
-		mpu_stat = REG_RD(iop_mpu, regi_iop_mpu, r_stat);
-	} while (mpu_stat.instr_reg_busy == regk_iop_mpu_yes && --timeout > 0);
-	if (timeout == 0) {
-		printk(KERN_ERR "Timeout waiting for MPU to be idle\n");
-		return -EBUSY;
-	}
-	return 0;
-}
-
-int iop_fw_load_spu(const unsigned char *fw_name, unsigned int spu_inst)
-{
-	reg_iop_sw_cpu_rw_mc_ctrl mc_ctrl = {
-		.wr_spu0_mem =    regk_iop_sw_cpu_no,
-		.wr_spu1_mem =    regk_iop_sw_cpu_no,
-		.size =           4,
-		.cmd =            regk_iop_sw_cpu_reg_copy,
-		.keep_owner =     regk_iop_sw_cpu_yes
-	};
-	reg_iop_spu_rw_ctrl spu_ctrl = {
-		.en  =            regk_iop_spu_no,
-		.fsm =            regk_iop_spu_no,
-	};
-	reg_iop_sw_cpu_r_mc_stat mc_stat;
-        const struct firmware *fw_entry;
-	u32 *data;
-	unsigned int timeout;
-	int retval, i;
-
-	if (spu_inst > 1)
-		return -ENODEV;
-
-	/* get firmware */
-	retval = request_firmware(&fw_entry,
-				  fw_name,
-				  &iop_spu_device[spu_inst]);
-	if (retval != 0)
-	{
-		printk(KERN_ERR
-		       "iop_load_spu: Failed to load firmware \"%s\"\n",
-		       fw_name);
-		return retval;
-	}
-	data = (u32 *) fw_entry->data;
-
-	/* acquire ownership of memory controller */
-	switch (spu_inst) {
-	case 0:
-		mc_ctrl.wr_spu0_mem = regk_iop_sw_cpu_yes;
-		REG_WR(iop_spu, regi_iop_spu0, rw_ctrl, spu_ctrl);
-		break;
-	case 1:
-		mc_ctrl.wr_spu1_mem = regk_iop_sw_cpu_yes;
-		REG_WR(iop_spu, regi_iop_spu1, rw_ctrl, spu_ctrl);
-		break;
-	}
-	timeout = IOP_TIMEOUT;
-	do {
-		REG_WR(iop_sw_cpu, regi_iop_sw_cpu, rw_mc_ctrl, mc_ctrl);
-		mc_stat = REG_RD(iop_sw_cpu, regi_iop_sw_cpu, r_mc_stat);
-	} while (mc_stat.owned_by_cpu == regk_iop_sw_cpu_no && --timeout > 0);
-	if (timeout == 0) {
-		printk(KERN_ERR "Timeout waiting to acquire MC\n");
-		retval = -EBUSY;
-		goto out;
-	}
-
-	/* write to SPU memory */
-	for (i = 0; i < (fw_entry->size/4); i++) {
-		switch (spu_inst) {
-		case 0:
-			REG_WR_INT(iop_spu, regi_iop_spu0, rw_seq_pc, (i*4));
-			break;
-		case 1:
-			REG_WR_INT(iop_spu, regi_iop_spu1, rw_seq_pc, (i*4));
-			break;
-		}
-		REG_WR_INT(iop_sw_cpu, regi_iop_sw_cpu, rw_mc_data, *data);
-		data++;
-	}
-
-	/* release ownership of memory controller */
-	(void) REG_RD(iop_sw_cpu, regi_iop_sw_cpu, rs_mc_data);
-
- out:
-	release_firmware(fw_entry);
-	return retval;
-}
-
-int iop_fw_load_mpu(unsigned char *fw_name)
-{
-	const unsigned int start_addr = 0;
-	reg_iop_mpu_rw_ctrl mpu_ctrl;
-        const struct firmware *fw_entry;
-	u32 *data;
-	int retval, i;
-
-	/* get firmware */
-	retval = request_firmware(&fw_entry, fw_name, &iop_mpu_device);
-	if (retval != 0)
-	{
-		printk(KERN_ERR
-		       "iop_load_spu: Failed to load firmware \"%s\"\n",
-		       fw_name);
-		return retval;
-	}
-	data = (u32 *) fw_entry->data;
-
-	/* disable MPU */
-	mpu_ctrl.en = regk_iop_mpu_no;
-	REG_WR(iop_mpu, regi_iop_mpu, rw_ctrl, mpu_ctrl);
-	/* put start address in R0 */
-	REG_WR_VECT(iop_mpu, regi_iop_mpu, rw_r, 0, start_addr);
-	/* write to memory by executing 'SWX i, 4, R0' for each word */
-	if ((retval = wait_mpu_idle()) != 0)
-		goto out;
-	REG_WR(iop_mpu, regi_iop_mpu, rw_instr, MPU_SWX_IIR_INSTR(0, 4, 0));
-	for (i = 0; i < (fw_entry->size / 4); i++) {
-		REG_WR_INT(iop_mpu, regi_iop_mpu, rw_immediate, *data);
-		if ((retval = wait_mpu_idle()) != 0)
-			goto out;
-		data++;
-	}
-
- out:
-	release_firmware(fw_entry);
-	return retval;
-}
-
-int iop_start_mpu(unsigned int start_addr)
-{
-	reg_iop_mpu_rw_ctrl mpu_ctrl = { .en = regk_iop_mpu_yes };
-	int retval;
-
-	/* disable MPU */
-	if ((retval = wait_mpu_idle()) != 0)
-		goto out;
-	REG_WR(iop_mpu, regi_iop_mpu, rw_instr, MPU_HALT());
-	if ((retval = wait_mpu_idle()) != 0)
-		goto out;
-	/* set PC and wait for it to bite */
-	if ((retval = wait_mpu_idle()) != 0)
-		goto out;
-	REG_WR_INT(iop_mpu, regi_iop_mpu, rw_instr, MPU_BA_I(start_addr));
-	if ((retval = wait_mpu_idle()) != 0)
-		goto out;
-	/* make sure the MPU starts executing with interrupts disabled */
-	REG_WR(iop_mpu, regi_iop_mpu, rw_instr, MPU_DI());
-	if ((retval = wait_mpu_idle()) != 0)
-		goto out;
-	/* enable MPU */
-	REG_WR(iop_mpu, regi_iop_mpu, rw_ctrl, mpu_ctrl);
- out:
-	return retval;
-}
-
-static int __init iop_fw_load_init(void)
-{
-#if 0
-	/*
-	 * static struct devices can not be added directly to sysfs by ignoring
-	 * the driver model infrastructure.  To fix this properly, please use
-	 * the platform_bus to register these devices to be able to properly
-	 * use the firmware infrastructure.
-	 */
-	device_initialize(&iop_spu_device[0]);
-	kobject_set_name(&iop_spu_device[0].kobj, "iop-spu0");
-	kobject_add(&iop_spu_device[0].kobj);
-	device_initialize(&iop_spu_device[1]);
-	kobject_set_name(&iop_spu_device[1].kobj, "iop-spu1");
-	kobject_add(&iop_spu_device[1].kobj);
-	device_initialize(&iop_mpu_device);
-	kobject_set_name(&iop_mpu_device.kobj, "iop-mpu");
-	kobject_add(&iop_mpu_device.kobj);
-#endif
-	return 0;
-}
-
-static void __exit iop_fw_load_exit(void)
-{
-}
-
-module_init(iop_fw_load_init);
-module_exit(iop_fw_load_exit);
-
-MODULE_DESCRIPTION("ETRAX FS IO-Processor Firmware Loader");
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(iop_fw_load_spu);
-EXPORT_SYMBOL(iop_fw_load_mpu);
-EXPORT_SYMBOL(iop_start_mpu);