powerpc: drop MPC837x_MDS platform support

This next evolutionary step in the e300 family of Modular Development
System (MDS) still has, at its core component, a full length card with a
PCI edge.  No case.  Serial and network connectors were on card, so it
could optionally be fitted with plastic stand-offs and run stand-alone
off a power brick.

This is very similar to the MPC834x_MDS and MPC836x_MDS removed in the
prior commits, but with this board variant as yet another evolutionary
step.  SATA and PCI-e were now available.  But overall the form factor
and design goals were unchanged.

Like all the MDS systems, it was meant as a vehicle to get the CPU out
early to hardware OEMs so software and board development could take place
in parallel.

These were made in limited numbers and availability preference was given
to partners who were planning to make their own boards.

Given that the whole reason for existence was to assist in enabling new
board designs [not happening for 10+ years], and that they weren't
generally available, and that the hardware wasn't really hobbyist friendly
even for retro computing, it makes sense to retire the support for this
particular platform.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230220115913.25811-4-paul.gortmaker@windriver.com

arch/powerpc/configs/83xx/mpc837x_mds_defconfig

-CONFIG_SYSVIPC=y
-CONFIG_LOG_BUF_SHIFT=14
-CONFIG_BLK_DEV_INITRD=y
-CONFIG_EXPERT=y
-CONFIG_SLAB=y
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-# CONFIG_BLK_DEV_BSG is not set
-CONFIG_PARTITION_ADVANCED=y
-# CONFIG_PPC_CHRP is not set
-# CONFIG_PPC_PMAC is not set
-CONFIG_PPC_83xx=y
-CONFIG_MPC837x_MDS=y
-CONFIG_GEN_RTC=y
-CONFIG_PCI=y
-CONFIG_NET=y
-CONFIG_PACKET=y
-CONFIG_UNIX=y
-CONFIG_XFRM_USER=m
-CONFIG_INET=y
-CONFIG_IP_MULTICAST=y
-CONFIG_IP_PNP=y
-CONFIG_IP_PNP_DHCP=y
-CONFIG_IP_PNP_BOOTP=y
-CONFIG_SYN_COOKIES=y
-# CONFIG_IPV6 is not set
-# CONFIG_FW_LOADER is not set
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_RAM=y
-CONFIG_BLK_DEV_RAM_SIZE=32768
-CONFIG_BLK_DEV_SD=y
-CONFIG_CHR_DEV_SG=y
-CONFIG_ATA=y
-CONFIG_SATA_FSL=y
-CONFIG_NETDEVICES=y
-CONFIG_GIANFAR=y
-CONFIG_MARVELL_PHY=y
-# CONFIG_INPUT_KEYBOARD is not set
-# CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO is not set
-# CONFIG_VT is not set
-CONFIG_SERIAL_8250=y
-CONFIG_SERIAL_8250_CONSOLE=y
-# CONFIG_HW_RANDOM is not set
-CONFIG_I2C=y
-CONFIG_I2C_CHARDEV=y
-CONFIG_I2C_MPC=y
-CONFIG_WATCHDOG=y
-CONFIG_EXT2_FS=y
-CONFIG_EXT4_FS=y
-CONFIG_PROC_KCORE=y
-CONFIG_TMPFS=y
-CONFIG_NFS_FS=y
-CONFIG_NFS_V4=y
-CONFIG_ROOT_NFS=y
-CONFIG_CRC_T10DIF=y
-CONFIG_CRYPTO_ECB=m
-CONFIG_CRYPTO_PCBC=m

arch/powerpc/configs/mpc83xx_defconfig

@@ -15,7 +15,6 @@ CONFIG_MPC832x_MDS=y
 CONFIG_MPC832x_RDB=y
 CONFIG_MPC834x_ITX=y
 CONFIG_MPC836x_RDK=y
-CONFIG_MPC837x_MDS=y
 CONFIG_MPC837x_RDB=y
 CONFIG_ASP834x=y
 CONFIG_QE_GPIO=y

arch/powerpc/configs/ppc6xx_defconfig

@@ -48,7 +48,6 @@ CONFIG_MPC832x_MDS=y
 CONFIG_MPC832x_RDB=y
 CONFIG_MPC834x_ITX=y
 CONFIG_MPC836x_RDK=y
-CONFIG_MPC837x_MDS=y
 CONFIG_MPC837x_RDB=y
 CONFIG_ASP834x=y
 CONFIG_PPC_86xx=y

arch/powerpc/platforms/83xx/Kconfig

@@ -58,13 +58,6 @@ config MPC836x_RDK
 	  This option enables support for the MPC836x RDK Processor Board,
 	  also known as ZOOM PowerQUICC Kit.
 
-config MPC837x_MDS
-	bool "Freescale MPC837x MDS"
-	select DEFAULT_UIMAGE
-	select PPC_MPC837x
-	help
-	  This option enables support for the MPC837x MDS Processor Board.
-
 config MPC837x_RDB
 	bool "Freescale MPC837x RDB/WLAN"
 	select DEFAULT_UIMAGE

arch/powerpc/platforms/83xx/Makefile

@@ -11,7 +11,6 @@ obj-$(CONFIG_MPC832x_RDB)	+= mpc832x_rdb.o
 obj-$(CONFIG_MPC834x_ITX)	+= mpc834x_itx.o
 obj-$(CONFIG_MPC836x_RDK)	+= mpc836x_rdk.o
 obj-$(CONFIG_MPC832x_MDS)	+= mpc832x_mds.o
-obj-$(CONFIG_MPC837x_MDS)	+= mpc837x_mds.o
 obj-$(CONFIG_MPC837x_RDB)	+= mpc837x_rdb.o
 obj-$(CONFIG_ASP834x)		+= asp834x.o
 obj-$(CONFIG_KMETER1)		+= km83xx.o

arch/powerpc/platforms/83xx/mpc837x_mds.c

-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * arch/powerpc/platforms/83xx/mpc837x_mds.c
- *
- * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
- *
- * MPC837x MDS board specific routines
- */
-
-#include <linux/pci.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
-
-#include <asm/time.h>
-#include <asm/ipic.h>
-#include <asm/udbg.h>
-#include <sysdev/fsl_pci.h>
-
-#include "mpc83xx.h"
-
-#define BCSR12_USB_SER_MASK	0x8a
-#define BCSR12_USB_SER_PIN	0x80
-#define BCSR12_USB_SER_DEVICE	0x02
-
-static int __init mpc837xmds_usb_cfg(void)
-{
-	struct device_node *np;
-	const void *phy_type, *mode;
-	void __iomem *bcsr_regs = NULL;
-	u8 bcsr12;
-	int ret;
-
-	ret = mpc837x_usb_cfg();
-	if (ret)
-		return ret;
-	/* Map BCSR area */
-	np = of_find_compatible_node(NULL, NULL, "fsl,mpc837xmds-bcsr");
-	if (np) {
-		bcsr_regs = of_iomap(np, 0);
-		of_node_put(np);
-	}
-	if (!bcsr_regs)
-		return -1;
-
-	np = of_find_node_by_name(NULL, "usb");
-	if (!np) {
-		ret = -ENODEV;
-		goto out;
-	}
-	phy_type = of_get_property(np, "phy_type", NULL);
-	if (phy_type && !strcmp(phy_type, "ulpi")) {
-		clrbits8(bcsr_regs + 12, BCSR12_USB_SER_PIN);
-	} else if (phy_type && !strcmp(phy_type, "serial")) {
-		mode = of_get_property(np, "dr_mode", NULL);
-		bcsr12 = in_8(bcsr_regs + 12) & ~BCSR12_USB_SER_MASK;
-		bcsr12 |= BCSR12_USB_SER_PIN;
-		if (mode && !strcmp(mode, "peripheral"))
-			bcsr12 |= BCSR12_USB_SER_DEVICE;
-		out_8(bcsr_regs + 12, bcsr12);
-	} else {
-		printk(KERN_ERR "USB DR: unsupported PHY\n");
-	}
-
-	of_node_put(np);
-out:
-	iounmap(bcsr_regs);
-	return ret;
-}
-
-/* ************************************************************************
- *
- * Setup the architecture
- *
- */
-static void __init mpc837x_mds_setup_arch(void)
-{
-	mpc83xx_setup_arch();
-	mpc837xmds_usb_cfg();
-}
-
-machine_device_initcall(mpc837x_mds, mpc83xx_declare_of_platform_devices);
-
-define_machine(mpc837x_mds) {
-	.name			= "MPC837x MDS",
-	.compatible		= "fsl,mpc837xmds",
-	.setup_arch		= mpc837x_mds_setup_arch,
-	.discover_phbs  	= mpc83xx_setup_pci,
-	.init_IRQ		= mpc83xx_ipic_init_IRQ,
-	.get_irq		= ipic_get_irq,
-	.restart		= mpc83xx_restart,
-	.time_init		= mpc83xx_time_init,
-	.progress		= udbg_progress,
-};