1 files changed, 348 insertions, 0 deletions
diff --git a/board/freescale/qemu-ppce500/qemu-ppce500.c b/board/freescale/qemu-ppce500/qemu-ppce500.c
new file mode 100644
index 0000000..3dbb0cf
--- /dev/null
+++ b/board/freescale/qemu-ppce500/qemu-ppce500.c
@@ -0,0 +1,348 @@
+/*
+ * Copyright 2007,2009-2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <pci.h>
+#include <asm/processor.h>
+#include <asm/mmu.h>
+#include <asm/fsl_pci.h>
+#include <asm/io.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <netdev.h>
+#include <fdtdec.h>
+#include <errno.h>
+#include <malloc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void *get_fdt_virt(void)
+{
+	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;
+
+	/*
+	 * To be able to read the FDT we need to create a temporary TLB
+	 * map for it.
+	 */
+	map_fdt_as(10);
+	r = fdt_get_base_address(fdt, fdt_path_offset(fdt, "/soc"));
+	disable_tlb(10);
+
+	return r;
+}
+
+int board_early_init_f(void)
+{
+	return 0;
+}
+
+int checkboard(void)
+{
+	return 0;
+}
+
+static int pci_map_region(void *fdt, int pci_node, int range_id,
+			  phys_size_t *ppaddr, pci_addr_t *pvaddr,
+			  pci_size_t *psize, ulong *pmap_addr)
+{
+	uint64_t addr;
+	uint64_t size;
+	ulong map_addr;
+	int r;
+
+	r = fdt_read_range(fdt, pci_node, 0, NULL, &addr, &size);
+	if (r)
+		return r;
+
+	if (ppaddr)
+		*ppaddr = addr;
+	if (psize)
+		*psize = size;
+
+	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, addr, size, TLB_MAP_IO));
+	*pmap_addr = map_addr + size;
+
+	if (pvaddr)
+		*pvaddr = map_addr;
+
+	return 0;
+}
+
+void pci_init_board(void)
+{
+	struct pci_controller *pci_hoses;
+	void *fdt = get_fdt_virt();
+	int pci_node = -1;
+	int pci_num = 0;
+	int pci_count = 0;
+	ulong map_addr;
+
+	puts("\n");
+
+	/* Start MMIO and PIO range maps above RAM */
+	map_addr = CONFIG_SYS_PCI_MAP_START;
+
+	/* Count and allocate PCI buses */
+	pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
+			"device_type", "pci", 4);
+	while (pci_node != -FDT_ERR_NOTFOUND) {
+		pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
+				"device_type", "pci", 4);
+		pci_count++;
+	}
+
+	if (pci_count) {
+		pci_hoses = malloc(sizeof(struct pci_controller) * pci_count);
+	} else {
+		printf("PCI: disabled\n\n");
+		return;
+	}
+
+	/* Spawn PCI buses based on device tree */
+	pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
+			"device_type", "pci", 4);
+	while (pci_node != -FDT_ERR_NOTFOUND) {
+		struct fsl_pci_info pci_info = { };
+		const fdt32_t *reg;
+		int r;
+
+		reg = fdt_getprop(fdt, pci_node, "reg", NULL);
+		pci_info.regs = fdt_translate_address(fdt, pci_node, reg);
+
+		/* Map MMIO range */
+		r = pci_map_region(fdt, pci_node, 0, &pci_info.mem_phys, NULL,
+				   &pci_info.mem_size, &map_addr);
+		if (r)
+			break;
+
+		/* Map PIO range */
+		r = pci_map_region(fdt, pci_node, 1, &pci_info.io_phys, NULL,
+				   &pci_info.io_size, &map_addr);
+		if (r)
+			break;
+
+		/*
+		 * The PCI framework finds virtual addresses for the buses
+		 * through our address map, so tell it the physical addresses.
+		 */
+		pci_info.mem_bus = pci_info.mem_phys;
+		pci_info.io_bus = pci_info.io_phys;
+
+		/* Instantiate */
+		pci_info.pci_num = pci_num + 1;
+
+		fsl_setup_hose(&pci_hoses[pci_num], pci_info.regs);
+		printf("PCI: base address %lx\n", pci_info.regs);
+
+		fsl_pci_init_port(&pci_info, &pci_hoses[pci_num], pci_num);
+
+		/* Jump to next PCI node */
+		pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
+				"device_type", "pci", 4);
+		pci_num++;
+	}
+
+	puts("\n");
+}
+
+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))
+		setenv_hex("qemu_kernel_addr", *prop);
+
+	/* Give the user a variable for the host fdt */
+	setenv_hex("fdt_addr_r", (ulong)fdt);
+
+	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");
+}
+
+int board_eth_init(bd_t *bis)
+{
+	return pci_eth_init(bis);
+}
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup(void *blob, bd_t *bd)
+{
+	FT_FSL_PCI_SETUP;
+}
+#endif
+
+void print_laws(void)
+{
+	/* We don't emulate LAWs yet */
+}
+
+phys_size_t fixed_sdram(void)
+{
+	return get_linear_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));
+}
+
+void init_laws(void)
+{
+	/* We don't emulate LAWs yet */
+}
+
+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;
+}