ppc: qemu: Move board directory from board/freescale to board/emulation

board/emulation is the place for other QEMU targets like x86, arm,
riscv. Let's move the qemu-ppce500 board codes there.

List me as a co-maintainer for this board.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

4 files changed, 342 insertions, 0 deletions

diff --git a/board/emulation/qemu-ppce500/Kconfig b/board/emulation/qemu-ppce500/Kconfig
new file mode 100644
index 00000000000..4312d986d83
--- /dev/null
+++ b/board/emulation/qemu-ppce500/Kconfig
@@ -0,0 +1,12 @@
+if TARGET_QEMU_PPCE500
+
+config SYS_BOARD
+	default "qemu-ppce500"
+
+config SYS_VENDOR
+	default "emulation"
+
+config SYS_CONFIG_NAME
+	default "qemu-ppce500"
+
+endif
diff --git a/board/emulation/qemu-ppce500/MAINTAINERS b/board/emulation/qemu-ppce500/MAINTAINERS
new file mode 100644
index 00000000000..7317983d6a6
--- /dev/null
+++ b/board/emulation/qemu-ppce500/MAINTAINERS
@@ -0,0 +1,7 @@
+QEMU-PPCE500 BOARD
+M:	Alexander Graf <agraf@csgraf.de>
+M:	Bin Meng <bmeng.cn@gmail.com>
+S:	Maintained
+F:	board/emulation/qemu-ppce500/
+F:	include/configs/qemu-ppce500.h
+F:	configs/qemu-ppce500_defconfig
diff --git a/board/emulation/qemu-ppce500/Makefile b/board/emulation/qemu-ppce500/Makefile
new file mode 100644
index 00000000000..817d06d845c
--- /dev/null
+++ b/board/emulation/qemu-ppce500/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright 2007 Freescale Semiconductor, Inc.
+# (C) Copyright 2001-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+
+obj-y	+= qemu-ppce500.o
diff --git a/board/emulation/qemu-ppce500/qemu-ppce500.c b/board/emulation/qemu-ppce500/qemu-ppce500.c
new file mode 100644
index 00000000000..daa103c5646
--- /dev/null
+++ b/board/emulation/qemu-ppce500/qemu-ppce500.c
@@ -0,0 +1,316 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2007,2009-2014 Freescale Semiconductor, Inc.
+ * Copyright (C) 2021, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <common.h>
+#include <command.h>
+#include <cpu_func.h>
+#include <dm.h>
+#include <env.h>
+#include <init.h>
+#include <log.h>
+#include <net.h>
+#include <pci.h>
+#include <time.h>
+#include <asm/global_data.h>
+#include <asm/processor.h>
+#include <asm/mmu.h>
+#include <asm/fsl_pci.h>
+#include <asm/io.h>
+#include <linux/libfdt.h>
+#include <fdt_support.h>
+#include <netdev.h>
+#include <fdtdec.h>
+#include <errno.h>
+#include <malloc.h>
+#include <virtio_types.h>
+#include <virtio.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void *get_fdt_virt(void)
+{
+	if (gd->flags & GD_FLG_RELOC)
+		return (void *)gd->fdt_blob;
+	else
+		return (void *)CONFIG_SYS_TMPVIRT;
+}
+
+static uint64_t get_fdt_phys(void)
+{
+	return (uint64_t)(uintptr_t)gd->fdt_blob;
+}
+
+static void map_fdt_as(int esel)
+{
+	u32 mas0, mas1, mas2, mas3, mas7;
+	uint64_t fdt_phys = get_fdt_phys();
+	unsigned long fdt_phys_tlb = fdt_phys & ~0xffffful;
+	unsigned long fdt_virt_tlb = (ulong)get_fdt_virt() & ~0xffffful;
+
+	mas0 = MAS0_TLBSEL(1) | MAS0_ESEL(esel);
+	mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS | MAS1_TSIZE(BOOKE_PAGESZ_1M);
+	mas2 = FSL_BOOKE_MAS2(fdt_virt_tlb, 0);
+	mas3 = FSL_BOOKE_MAS3(fdt_phys_tlb, 0, MAS3_SW|MAS3_SR);
+	mas7 = FSL_BOOKE_MAS7(fdt_phys_tlb);
+
+	write_tlb(mas0, mas1, mas2, mas3, mas7);
+}
+
+uint64_t get_phys_ccsrbar_addr_early(void)
+{
+	void *fdt = get_fdt_virt();
+	uint64_t r;
+	int size, node;
+	u32 naddr;
+	const fdt32_t *prop;
+
+	/*
+	 * To be able to read the FDT we need to create a temporary TLB
+	 * map for it.
+	 */
+	map_fdt_as(10);
+	node = fdt_path_offset(fdt, "/soc");
+	naddr = fdt_address_cells(fdt, node);
+	prop = fdt_getprop(fdt, node, "ranges", &size);
+	r = fdt_translate_address(fdt, node, prop + naddr);
+	disable_tlb(10);
+
+	return r;
+}
+
+int checkboard(void)
+{
+	return 0;
+}
+
+static int pci_map_region(phys_addr_t paddr, phys_size_t size, ulong *pmap_addr)
+{
+	ulong map_addr;
+
+	if (!pmap_addr)
+		return 0;
+
+	map_addr = *pmap_addr;
+
+	/* Align map_addr */
+	map_addr += size - 1;
+	map_addr &= ~(size - 1);
+
+	if (map_addr + size >= CONFIG_SYS_PCI_MAP_END)
+		return -1;
+
+	/* Map virtual memory for range */
+	assert(!tlb_map_range(map_addr, paddr, size, TLB_MAP_IO));
+	*pmap_addr = map_addr + size;
+
+	return 0;
+}
+
+int misc_init_r(void)
+{
+	struct udevice *dev;
+	struct pci_region *io;
+	struct pci_region *mem;
+	struct pci_region *pre;
+	ulong map_addr;
+	int ret;
+
+	/* Ensure PCI is probed */
+	uclass_first_device(UCLASS_PCI, &dev);
+
+	pci_get_regions(dev, &io, &mem, &pre);
+
+	/* Start MMIO and PIO range maps above RAM */
+	map_addr = CONFIG_SYS_PCI_MAP_START;
+
+	/* Map MMIO range */
+	ret = pci_map_region(mem->phys_start, mem->size, &map_addr);
+	if (ret)
+		return ret;
+
+	/* Map PIO range */
+	ret = pci_map_region(io->phys_start, io->size, &map_addr);
+	if (ret)
+		return ret;
+
+	/*
+	 * Make sure virtio bus is enumerated so that peripherals
+	 * on the virtio bus can be discovered by their drivers.
+	 */
+	virtio_init();
+
+	/*
+	 * U-Boot is relocated to RAM already, let's delete the temporary FDT
+	 * virtual-physical mapping that was used in the pre-relocation phase.
+	 */
+	disable_tlb(find_tlb_idx((void *)CONFIG_SYS_TMPVIRT, 1));
+
+	return 0;
+}
+
+int last_stage_init(void)
+{
+	void *fdt = get_fdt_virt();
+	int len = 0;
+	const uint64_t *prop;
+	int chosen;
+
+	chosen = fdt_path_offset(fdt, "/chosen");
+	if (chosen < 0) {
+		printf("Couldn't find /chosen node in fdt\n");
+		return -EIO;
+	}
+
+	/* -kernel boot */
+	prop = fdt_getprop(fdt, chosen, "qemu,boot-kernel", &len);
+	if (prop && (len >= 8))
+		env_set_hex("qemu_kernel_addr", *prop);
+
+	return 0;
+}
+
+static uint64_t get_linear_ram_size(void)
+{
+	void *fdt = get_fdt_virt();
+	const void *prop;
+	int memory;
+	int len;
+
+	memory = fdt_path_offset(fdt, "/memory");
+	prop = fdt_getprop(fdt, memory, "reg", &len);
+
+	if (prop && len >= 16)
+		return *(uint64_t *)(prop+8);
+
+	panic("Couldn't determine RAM size");
+}
+
+phys_size_t fsl_ddr_sdram_size(void)
+{
+	return get_linear_ram_size();
+}
+
+void init_tlbs(void)
+{
+	phys_size_t ram_size;
+
+	/*
+	 * Create a temporary AS=1 map for the fdt
+	 *
+	 * We use ESEL=0 here to overwrite the previous AS=0 map for ourselves
+	 * which was only 4k big. This way we don't have to clear any other maps.
+	 */
+	map_fdt_as(0);
+
+	/* Fetch RAM size from the fdt */
+	ram_size = get_linear_ram_size();
+
+	/* And remove our fdt map again */
+	disable_tlb(0);
+
+	/* Create an internal map of manually created TLB maps */
+	init_used_tlb_cams();
+
+	/* Create a dynamic AS=0 CCSRBAR mapping */
+	assert(!tlb_map_range(CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
+			      1024 * 1024, TLB_MAP_IO));
+
+	/* Create a RAM map that spans all accessible RAM */
+	setup_ddr_tlbs(ram_size >> 20);
+
+	/* Create a map for the TLB */
+	assert(!tlb_map_range((ulong)get_fdt_virt(), get_fdt_phys(),
+			      1024 * 1024, TLB_MAP_RAM));
+}
+
+static uint32_t get_cpu_freq(void)
+{
+	void *fdt = get_fdt_virt();
+	int cpus_node = fdt_path_offset(fdt, "/cpus");
+	int cpu_node = fdt_first_subnode(fdt, cpus_node);
+	const char *prop = "clock-frequency";
+	return fdt_getprop_u32_default_node(fdt, cpu_node, 0, prop, 0);
+}
+
+void get_sys_info(sys_info_t *sys_info)
+{
+	int freq = get_cpu_freq();
+
+	memset(sys_info, 0, sizeof(sys_info_t));
+	sys_info->freq_systembus = freq;
+	sys_info->freq_ddrbus = freq;
+	sys_info->freq_processor[0] = freq;
+}
+
+int get_clocks(void)
+{
+	sys_info_t sys_info;
+
+	get_sys_info(&sys_info);
+
+	gd->cpu_clk = sys_info.freq_processor[0];
+	gd->bus_clk = sys_info.freq_systembus;
+	gd->mem_clk = sys_info.freq_ddrbus;
+	gd->arch.lbc_clk = sys_info.freq_ddrbus;
+
+	return 0;
+}
+
+unsigned long get_tbclk(void)
+{
+	void *fdt = get_fdt_virt();
+	int cpus_node = fdt_path_offset(fdt, "/cpus");
+	int cpu_node = fdt_first_subnode(fdt, cpus_node);
+	const char *prop = "timebase-frequency";
+	return fdt_getprop_u32_default_node(fdt, cpu_node, 0, prop, 0);
+}
+
+/********************************************
+ * get_bus_freq
+ * return system bus freq in Hz
+ *********************************************/
+ulong get_bus_freq(ulong dummy)
+{
+	sys_info_t sys_info;
+	get_sys_info(&sys_info);
+	return sys_info.freq_systembus;
+}
+
+/*
+ * Return the number of cores on this SOC.
+ */
+int cpu_numcores(void)
+{
+	/*
+	 * The QEMU u-boot target only needs to drive the first core,
+	 * spinning and device tree nodes get driven by QEMU itself
+	 */
+	return 1;
+}
+
+/*
+ * Return a 32-bit mask indicating which cores are present on this SOC.
+ */
+u32 cpu_mask(void)
+{
+	return (1 << cpu_numcores()) - 1;
+}
+
+/**
+ * Return the virtual address of FDT that was passed by QEMU
+ *
+ * @return virtual address of FDT received from QEMU in r3 register
+ */
+void *board_fdt_blob_setup(void)
+{
+	return get_fdt_virt();
+}
+
+/* See CONFIG_SYS_NS16550_CLK in arch/powerpc/include/asm/config.h */
+int get_serial_clock(void)
+{
+	return get_bus_freq(0);
+}