powerpc: drop HPC II (MPC7448) evaluation platform support.

This was an interesting platform - it was the 1st instance of a
respin of earlier 130nm 74xx CPUs on 90nm and systems using MPC7448
were positioned as a rack server platform solution.

Given that, the evaluation platform (at least the one I had) was shipped
in a horizontal 1/2 height Antec desktop case with retro styling and
colours, despite the fact the docs explicitly stated that the HPC II is
not a desktop machine (noting it had no gfx or legacy PC I/O support).

Historic trivia aside, this was the 1st introduction of the e600
procfam as an evolution from the earlier G4.

However even with the claim to being "1st e600" it seems the 2005+
era was turning its attention to multicore support and from my memory
this poor guy was quickly overshadowed by the dual core MPC8641D.

All that aside, we are once again looking at 15+ year old evaluation
platforms that were not widely distributed, so 2023 removal makes sense.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230225201318.3682-2-paul.gortmaker@windriver.com

3 files changed, 0 insertions, 198 deletions

diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index c54786f8461e..a57424d6ef20 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -29,16 +29,6 @@ config STORCENTER
 	  Select STORCENTER if configuring for the iomega StorCenter
 	  with an 8241 CPU in it.
 
-config MPC7448HPC2
-	bool "Freescale MPC7448HPC2(Taiga)"
-	depends on EMBEDDED6xx
-	select TSI108_BRIDGE
-	select DEFAULT_UIMAGE
-	select PPC_UDBG_16550
-	help
-	  Select MPC7448HPC2 if configuring for Freescale MPC7448HPC2 (Taiga)
-	  platform
-
 config PPC_HOLLY
 	bool "PPC750GX/CL with TSI10x bridge (Hickory/Holly)"
 	depends on EMBEDDED6xx
diff --git a/arch/powerpc/platforms/embedded6xx/Makefile b/arch/powerpc/platforms/embedded6xx/Makefile
index e656ae9f23c6..7f2a8154e5a0 100644
--- a/arch/powerpc/platforms/embedded6xx/Makefile
+++ b/arch/powerpc/platforms/embedded6xx/Makefile
@@ -2,7 +2,6 @@
 #
 # Makefile for the 6xx/7xx/7xxxx linux kernel.
 #
-obj-$(CONFIG_MPC7448HPC2)	+= mpc7448_hpc2.o
 obj-$(CONFIG_LINKSTATION)	+= linkstation.o ls_uart.o
 obj-$(CONFIG_STORCENTER)	+= storcenter.o
 obj-$(CONFIG_PPC_HOLLY)		+= holly.o
diff --git a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
deleted file mode 100644
index ec93d69dc0ee..000000000000
--- a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
+++ /dev/null
@@ -1,187 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * mpc7448_hpc2.c
- *
- * Board setup routines for the Freescale mpc7448hpc2(taiga) platform
- *
- * Author: Jacob Pan
- *	 jacob.pan@freescale.com
- * Author: Xianghua Xiao
- *       x.xiao@freescale.com
- * Maintainer: Roy Zang <tie-fei.zang@freescale.com>
- * 	Add Flat Device Tree support fot mpc7448hpc2 board
- *
- * Copyright 2004-2006 Freescale Semiconductor, Inc.
- */
-
-#include <linux/stddef.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/kdev_t.h>
-#include <linux/console.h>
-#include <linux/extable.h>
-#include <linux/delay.h>
-#include <linux/irq.h>
-#include <linux/seq_file.h>
-#include <linux/root_dev.h>
-#include <linux/serial.h>
-#include <linux/tty.h>
-#include <linux/serial_core.h>
-#include <linux/of_irq.h>
-
-#include <asm/time.h>
-#include <asm/machdep.h>
-#include <asm/udbg.h>
-#include <asm/tsi108.h>
-#include <asm/pci-bridge.h>
-#include <asm/reg.h>
-#include <mm/mmu_decl.h>
-#include <asm/tsi108_pci.h>
-#include <asm/tsi108_irq.h>
-#include <asm/mpic.h>
-
-#undef DEBUG
-#ifdef DEBUG
-#define DBG(fmt...) do { printk(fmt); } while(0)
-#else
-#define DBG(fmt...) do { } while(0)
-#endif
-
-#define MPC7448HPC2_PCI_CFG_PHYS 0xfb000000
-
-int mpc7448_hpc2_exclude_device(struct pci_controller *hose,
-				u_char bus, u_char devfn)
-{
-	if (bus == 0 && PCI_SLOT(devfn) == 0)
-		return PCIBIOS_DEVICE_NOT_FOUND;
-	else
-		return PCIBIOS_SUCCESSFUL;
-}
-
-static void __init mpc7448_hpc2_setup_pci(void)
-{
-#ifdef CONFIG_PCI
-	struct device_node *np;
-	if (ppc_md.progress)
-		ppc_md.progress("mpc7448_hpc2_setup_pci():set_bridge", 0);
-
-	/* setup PCI host bridge */
-	for_each_compatible_node(np, "pci", "tsi108-pci")
-		tsi108_setup_pci(np, MPC7448HPC2_PCI_CFG_PHYS, 0);
-
-	ppc_md.pci_exclude_device = mpc7448_hpc2_exclude_device;
-	if (ppc_md.progress)
-		ppc_md.progress("tsi108: resources set", 0x100);
-#endif
-}
-
-static void __init mpc7448_hpc2_setup_arch(void)
-{
-	tsi108_csr_vir_base = get_vir_csrbase();
-
-	printk(KERN_INFO "MPC7448HPC2 (TAIGA) Platform\n");
-	printk(KERN_INFO
-	       "Jointly ported by Freescale and Tundra Semiconductor\n");
-	printk(KERN_INFO
-	       "Enabling L2 cache then enabling the HID0 prefetch engine.\n");
-}
-
-/*
- * Interrupt setup and service.  Interrupts on the mpc7448_hpc2 come
- * from the four external INT pins, PCI interrupts are routed via
- * PCI interrupt control registers, it generates internal IRQ23
- *
- * Interrupt routing on the Taiga Board:
- * TSI108:PB_INT[0] -> CPU0:INT#
- * TSI108:PB_INT[1] -> CPU0:MCP#
- * TSI108:PB_INT[2] -> N/C
- * TSI108:PB_INT[3] -> N/C
- */
-static void __init mpc7448_hpc2_init_IRQ(void)
-{
-	struct mpic *mpic;
-#ifdef CONFIG_PCI
-	unsigned int cascade_pci_irq;
-	struct device_node *tsi_pci;
-	struct device_node *cascade_node = NULL;
-#endif
-
-	mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
-			MPIC_SPV_EOI | MPIC_NO_PTHROU_DIS | MPIC_REGSET_TSI108,
-			24, 0,
-			"Tsi108_PIC");
-
-	BUG_ON(mpic == NULL);
-
-	mpic_assign_isu(mpic, 0, mpic->paddr + 0x100);
-
-	mpic_init(mpic);
-
-#ifdef CONFIG_PCI
-	tsi_pci = of_find_node_by_type(NULL, "pci");
-	if (tsi_pci == NULL) {
-		printk("%s: No tsi108 pci node found !\n", __func__);
-		return;
-	}
-	cascade_node = of_find_node_by_type(NULL, "pic-router");
-	if (cascade_node == NULL) {
-		printk("%s: No tsi108 pci cascade node found !\n", __func__);
-		return;
-	}
-
-	cascade_pci_irq = irq_of_parse_and_map(tsi_pci, 0);
-	DBG("%s: tsi108 cascade_pci_irq = 0x%x\n", __func__,
-	    (u32) cascade_pci_irq);
-	tsi108_pci_int_init(cascade_node);
-	irq_set_handler_data(cascade_pci_irq, mpic);
-	irq_set_chained_handler(cascade_pci_irq, tsi108_irq_cascade);
-
-	of_node_put(tsi_pci);
-	of_node_put(cascade_node);
-#endif
-	/* Configure MPIC outputs to CPU0 */
-	tsi108_write_reg(TSI108_MPIC_OFFSET + 0x30c, 0);
-}
-
-void mpc7448_hpc2_show_cpuinfo(struct seq_file *m)
-{
-	seq_printf(m, "vendor\t\t: Freescale Semiconductor\n");
-}
-
-static void __noreturn mpc7448_hpc2_restart(char *cmd)
-{
-	local_irq_disable();
-
-	/* Set exception prefix high - to the firmware */
-	mtmsr(mfmsr() | MSR_IP);
-	isync();
-
-	for (;;) ;		/* Spin until reset happens */
-}
-
-static int mpc7448_machine_check_exception(struct pt_regs *regs)
-{
-	const struct exception_table_entry *entry;
-
-	/* Are we prepared to handle this fault */
-	if ((entry = search_exception_tables(regs->nip)) != NULL) {
-		tsi108_clear_pci_cfg_error();
-		regs_set_recoverable(regs);
-		regs_set_return_ip(regs, extable_fixup(entry));
-		return 1;
-	}
-	return 0;
-}
-
-define_machine(mpc7448_hpc2){
-	.name 			= "MPC7448 HPC2",
-	.compatible		= "mpc74xx",
-	.setup_arch 		= mpc7448_hpc2_setup_arch,
-	.discover_phbs		= mpc7448_hpc2_setup_pci,
-	.init_IRQ 		= mpc7448_hpc2_init_IRQ,
-	.show_cpuinfo 		= mpc7448_hpc2_show_cpuinfo,
-	.get_irq 		= mpic_get_irq,
-	.restart 		= mpc7448_hpc2_restart,
-	.machine_check_exception= mpc7448_machine_check_exception,
-	.progress 		= udbg_progress,
-};