2 * Copyright 2007,2009-2014 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
10 #include <asm/processor.h>
12 #include <asm/fsl_pci.h>
15 #include <fdt_support.h>
21 DECLARE_GLOBAL_DATA_PTR;
23 static void *get_fdt_virt(void)
25 return (void *)CONFIG_SYS_TMPVIRT;
28 static uint64_t get_fdt_phys(void)
30 return (uint64_t)(uintptr_t)gd->fdt_blob;
33 static void map_fdt_as(int esel)
35 u32 mas0, mas1, mas2, mas3, mas7;
36 uint64_t fdt_phys = get_fdt_phys();
37 unsigned long fdt_phys_tlb = fdt_phys & ~0xffffful;
38 unsigned long fdt_virt_tlb = (ulong)get_fdt_virt() & ~0xffffful;
40 mas0 = MAS0_TLBSEL(1) | MAS0_ESEL(esel);
41 mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS | MAS1_TSIZE(BOOKE_PAGESZ_1M);
42 mas2 = FSL_BOOKE_MAS2(fdt_virt_tlb, 0);
43 mas3 = FSL_BOOKE_MAS3(fdt_phys_tlb, 0, MAS3_SW|MAS3_SR);
44 mas7 = FSL_BOOKE_MAS7(fdt_phys_tlb);
46 write_tlb(mas0, mas1, mas2, mas3, mas7);
49 uint64_t get_phys_ccsrbar_addr_early(void)
51 void *fdt = get_fdt_virt();
55 * To be able to read the FDT we need to create a temporary TLB
59 r = fdt_get_base_address(fdt, fdt_path_offset(fdt, "/soc"));
65 int board_early_init_f(void)
75 static int pci_map_region(void *fdt, int pci_node, int range_id,
76 phys_size_t *ppaddr, pci_addr_t *pvaddr,
77 pci_size_t *psize, ulong *pmap_addr)
84 r = fdt_read_range(fdt, pci_node, range_id, NULL, &addr, &size);
96 map_addr = *pmap_addr;
100 map_addr &= ~(size - 1);
102 if (map_addr + size >= CONFIG_SYS_PCI_MAP_END)
105 /* Map virtual memory for range */
106 assert(!tlb_map_range(map_addr, addr, size, TLB_MAP_IO));
107 *pmap_addr = map_addr + size;
115 void pci_init_board(void)
117 struct pci_controller *pci_hoses;
118 void *fdt = get_fdt_virt();
126 /* Start MMIO and PIO range maps above RAM */
127 map_addr = CONFIG_SYS_PCI_MAP_START;
129 /* Count and allocate PCI buses */
130 pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
131 "device_type", "pci", 4);
132 while (pci_node != -FDT_ERR_NOTFOUND) {
133 pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
134 "device_type", "pci", 4);
139 pci_hoses = malloc(sizeof(struct pci_controller) * pci_count);
141 printf("PCI: disabled\n\n");
145 /* Spawn PCI buses based on device tree */
146 pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
147 "device_type", "pci", 4);
148 while (pci_node != -FDT_ERR_NOTFOUND) {
149 struct fsl_pci_info pci_info = { };
153 reg = fdt_getprop(fdt, pci_node, "reg", NULL);
154 pci_info.regs = fdt_translate_address(fdt, pci_node, reg);
157 r = pci_map_region(fdt, pci_node, 0, &pci_info.mem_phys, NULL,
158 &pci_info.mem_size, &map_addr);
163 r = pci_map_region(fdt, pci_node, 1, &pci_info.io_phys, NULL,
164 &pci_info.io_size, &map_addr);
169 * The PCI framework finds virtual addresses for the buses
170 * through our address map, so tell it the physical addresses.
172 pci_info.mem_bus = pci_info.mem_phys;
173 pci_info.io_bus = pci_info.io_phys;
176 pci_info.pci_num = pci_num + 1;
178 fsl_setup_hose(&pci_hoses[pci_num], pci_info.regs);
179 printf("PCI: base address %lx\n", pci_info.regs);
181 fsl_pci_init_port(&pci_info, &pci_hoses[pci_num], pci_num);
183 /* Jump to next PCI node */
184 pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
185 "device_type", "pci", 4);
192 int last_stage_init(void)
194 void *fdt = get_fdt_virt();
196 const uint64_t *prop;
199 chosen = fdt_path_offset(fdt, "/chosen");
201 printf("Couldn't find /chosen node in fdt\n");
206 prop = fdt_getprop(fdt, chosen, "qemu,boot-kernel", &len);
207 if (prop && (len >= 8))
208 setenv_hex("qemu_kernel_addr", *prop);
210 /* Give the user a variable for the host fdt */
211 setenv_hex("fdt_addr_r", (ulong)fdt);
216 static uint64_t get_linear_ram_size(void)
218 void *fdt = get_fdt_virt();
223 memory = fdt_path_offset(fdt, "/memory");
224 prop = fdt_getprop(fdt, memory, "reg", &len);
226 if (prop && len >= 16)
227 return *(uint64_t *)(prop+8);
229 panic("Couldn't determine RAM size");
232 int board_eth_init(bd_t *bis)
234 return pci_eth_init(bis);
237 #if defined(CONFIG_OF_BOARD_SETUP)
238 int ft_board_setup(void *blob, bd_t *bd)
246 void print_laws(void)
248 /* We don't emulate LAWs yet */
251 phys_size_t fixed_sdram(void)
253 return get_linear_ram_size();
256 phys_size_t fsl_ddr_sdram_size(void)
258 return get_linear_ram_size();
263 phys_size_t ram_size;
266 * Create a temporary AS=1 map for the fdt
268 * We use ESEL=0 here to overwrite the previous AS=0 map for ourselves
269 * which was only 4k big. This way we don't have to clear any other maps.
273 /* Fetch RAM size from the fdt */
274 ram_size = get_linear_ram_size();
276 /* And remove our fdt map again */
279 /* Create an internal map of manually created TLB maps */
280 init_used_tlb_cams();
282 /* Create a dynamic AS=0 CCSRBAR mapping */
283 assert(!tlb_map_range(CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
284 1024 * 1024, TLB_MAP_IO));
286 /* Create a RAM map that spans all accessible RAM */
287 setup_ddr_tlbs(ram_size >> 20);
289 /* Create a map for the TLB */
290 assert(!tlb_map_range((ulong)get_fdt_virt(), get_fdt_phys(),
291 1024 * 1024, TLB_MAP_RAM));
296 /* We don't emulate LAWs yet */
299 static uint32_t get_cpu_freq(void)
301 void *fdt = get_fdt_virt();
302 int cpus_node = fdt_path_offset(fdt, "/cpus");
303 int cpu_node = fdt_first_subnode(fdt, cpus_node);
304 const char *prop = "clock-frequency";
305 return fdt_getprop_u32_default_node(fdt, cpu_node, 0, prop, 0);
308 void get_sys_info(sys_info_t *sys_info)
310 int freq = get_cpu_freq();
312 memset(sys_info, 0, sizeof(sys_info_t));
313 sys_info->freq_systembus = freq;
314 sys_info->freq_ddrbus = freq;
315 sys_info->freq_processor[0] = freq;
318 int get_clocks (void)
322 get_sys_info(&sys_info);
324 gd->cpu_clk = sys_info.freq_processor[0];
325 gd->bus_clk = sys_info.freq_systembus;
326 gd->mem_clk = sys_info.freq_ddrbus;
327 gd->arch.lbc_clk = sys_info.freq_ddrbus;
332 unsigned long get_tbclk (void)
334 void *fdt = get_fdt_virt();
335 int cpus_node = fdt_path_offset(fdt, "/cpus");
336 int cpu_node = fdt_first_subnode(fdt, cpus_node);
337 const char *prop = "timebase-frequency";
338 return fdt_getprop_u32_default_node(fdt, cpu_node, 0, prop, 0);
341 /********************************************
343 * return system bus freq in Hz
344 *********************************************/
345 ulong get_bus_freq (ulong dummy)
348 get_sys_info(&sys_info);
349 return sys_info.freq_systembus;
353 * Return the number of cores on this SOC.
355 int cpu_numcores(void)
358 * The QEMU u-boot target only needs to drive the first core,
359 * spinning and device tree nodes get driven by QEMU itself
365 * Return a 32-bit mask indicating which cores are present on this SOC.
369 return (1 << cpu_numcores()) - 1;