1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2007,2009-2014 Freescale Semiconductor, Inc.
15 #include <asm/processor.h>
17 #include <asm/fsl_pci.h>
19 #include <linux/libfdt.h>
20 #include <fdt_support.h>
26 DECLARE_GLOBAL_DATA_PTR;
28 static void *get_fdt_virt(void)
30 return (void *)CONFIG_SYS_TMPVIRT;
33 static uint64_t get_fdt_phys(void)
35 return (uint64_t)(uintptr_t)gd->fdt_blob;
38 static void map_fdt_as(int esel)
40 u32 mas0, mas1, mas2, mas3, mas7;
41 uint64_t fdt_phys = get_fdt_phys();
42 unsigned long fdt_phys_tlb = fdt_phys & ~0xffffful;
43 unsigned long fdt_virt_tlb = (ulong)get_fdt_virt() & ~0xffffful;
45 mas0 = MAS0_TLBSEL(1) | MAS0_ESEL(esel);
46 mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS | MAS1_TSIZE(BOOKE_PAGESZ_1M);
47 mas2 = FSL_BOOKE_MAS2(fdt_virt_tlb, 0);
48 mas3 = FSL_BOOKE_MAS3(fdt_phys_tlb, 0, MAS3_SW|MAS3_SR);
49 mas7 = FSL_BOOKE_MAS7(fdt_phys_tlb);
51 write_tlb(mas0, mas1, mas2, mas3, mas7);
54 uint64_t get_phys_ccsrbar_addr_early(void)
56 void *fdt = get_fdt_virt();
63 * To be able to read the FDT we need to create a temporary TLB
67 node = fdt_path_offset(fdt, "/soc");
68 naddr = fdt_address_cells(fdt, node);
69 prop = fdt_getprop(fdt, node, "ranges", &size);
70 r = fdt_translate_address(fdt, node, prop + naddr);
76 int board_early_init_f(void)
86 static int pci_map_region(void *fdt, int pci_node, int range_id,
87 phys_size_t *ppaddr, pci_addr_t *pvaddr,
88 pci_size_t *psize, ulong *pmap_addr)
95 r = fdt_read_range(fdt, pci_node, range_id, NULL, &addr, &size);
107 map_addr = *pmap_addr;
110 map_addr += size - 1;
111 map_addr &= ~(size - 1);
113 if (map_addr + size >= CONFIG_SYS_PCI_MAP_END)
116 /* Map virtual memory for range */
117 assert(!tlb_map_range(map_addr, addr, size, TLB_MAP_IO));
118 *pmap_addr = map_addr + size;
126 void pci_init_board(void)
128 struct pci_controller *pci_hoses;
129 void *fdt = get_fdt_virt();
137 /* Start MMIO and PIO range maps above RAM */
138 map_addr = CONFIG_SYS_PCI_MAP_START;
140 /* Count and allocate PCI buses */
141 pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
142 "device_type", "pci", 4);
143 while (pci_node != -FDT_ERR_NOTFOUND) {
144 pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
145 "device_type", "pci", 4);
150 pci_hoses = malloc(sizeof(struct pci_controller) * pci_count);
152 printf("PCI: disabled\n\n");
156 /* Spawn PCI buses based on device tree */
157 pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
158 "device_type", "pci", 4);
159 while (pci_node != -FDT_ERR_NOTFOUND) {
160 struct fsl_pci_info pci_info = { };
164 reg = fdt_getprop(fdt, pci_node, "reg", NULL);
165 pci_info.regs = fdt_translate_address(fdt, pci_node, reg);
168 r = pci_map_region(fdt, pci_node, 0, &pci_info.mem_phys, NULL,
169 &pci_info.mem_size, &map_addr);
174 r = pci_map_region(fdt, pci_node, 1, &pci_info.io_phys, NULL,
175 &pci_info.io_size, &map_addr);
180 * The PCI framework finds virtual addresses for the buses
181 * through our address map, so tell it the physical addresses.
183 pci_info.mem_bus = pci_info.mem_phys;
184 pci_info.io_bus = pci_info.io_phys;
187 pci_info.pci_num = pci_num + 1;
189 fsl_setup_hose(&pci_hoses[pci_num], pci_info.regs);
190 printf("PCI: base address %lx\n", pci_info.regs);
192 fsl_pci_init_port(&pci_info, &pci_hoses[pci_num], pci_num);
194 /* Jump to next PCI node */
195 pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
196 "device_type", "pci", 4);
203 int last_stage_init(void)
205 void *fdt = get_fdt_virt();
207 const uint64_t *prop;
210 chosen = fdt_path_offset(fdt, "/chosen");
212 printf("Couldn't find /chosen node in fdt\n");
217 prop = fdt_getprop(fdt, chosen, "qemu,boot-kernel", &len);
218 if (prop && (len >= 8))
219 env_set_hex("qemu_kernel_addr", *prop);
221 /* Give the user a variable for the host fdt */
222 env_set_hex("fdt_addr_r", (ulong)fdt);
227 static uint64_t get_linear_ram_size(void)
229 void *fdt = get_fdt_virt();
234 memory = fdt_path_offset(fdt, "/memory");
235 prop = fdt_getprop(fdt, memory, "reg", &len);
237 if (prop && len >= 16)
238 return *(uint64_t *)(prop+8);
240 panic("Couldn't determine RAM size");
243 int board_eth_init(bd_t *bis)
245 return pci_eth_init(bis);
248 #if defined(CONFIG_OF_BOARD_SETUP)
249 int ft_board_setup(void *blob, bd_t *bd)
257 void print_laws(void)
259 /* We don't emulate LAWs yet */
262 phys_size_t fixed_sdram(void)
264 return get_linear_ram_size();
267 phys_size_t fsl_ddr_sdram_size(void)
269 return get_linear_ram_size();
274 phys_size_t ram_size;
277 * Create a temporary AS=1 map for the fdt
279 * We use ESEL=0 here to overwrite the previous AS=0 map for ourselves
280 * which was only 4k big. This way we don't have to clear any other maps.
284 /* Fetch RAM size from the fdt */
285 ram_size = get_linear_ram_size();
287 /* And remove our fdt map again */
290 /* Create an internal map of manually created TLB maps */
291 init_used_tlb_cams();
293 /* Create a dynamic AS=0 CCSRBAR mapping */
294 assert(!tlb_map_range(CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
295 1024 * 1024, TLB_MAP_IO));
297 /* Create a RAM map that spans all accessible RAM */
298 setup_ddr_tlbs(ram_size >> 20);
300 /* Create a map for the TLB */
301 assert(!tlb_map_range((ulong)get_fdt_virt(), get_fdt_phys(),
302 1024 * 1024, TLB_MAP_RAM));
307 /* We don't emulate LAWs yet */
310 static uint32_t get_cpu_freq(void)
312 void *fdt = get_fdt_virt();
313 int cpus_node = fdt_path_offset(fdt, "/cpus");
314 int cpu_node = fdt_first_subnode(fdt, cpus_node);
315 const char *prop = "clock-frequency";
316 return fdt_getprop_u32_default_node(fdt, cpu_node, 0, prop, 0);
319 void get_sys_info(sys_info_t *sys_info)
321 int freq = get_cpu_freq();
323 memset(sys_info, 0, sizeof(sys_info_t));
324 sys_info->freq_systembus = freq;
325 sys_info->freq_ddrbus = freq;
326 sys_info->freq_processor[0] = freq;
333 get_sys_info(&sys_info);
335 gd->cpu_clk = sys_info.freq_processor[0];
336 gd->bus_clk = sys_info.freq_systembus;
337 gd->mem_clk = sys_info.freq_ddrbus;
338 gd->arch.lbc_clk = sys_info.freq_ddrbus;
343 unsigned long get_tbclk(void)
345 void *fdt = get_fdt_virt();
346 int cpus_node = fdt_path_offset(fdt, "/cpus");
347 int cpu_node = fdt_first_subnode(fdt, cpus_node);
348 const char *prop = "timebase-frequency";
349 return fdt_getprop_u32_default_node(fdt, cpu_node, 0, prop, 0);
352 /********************************************
354 * return system bus freq in Hz
355 *********************************************/
356 ulong get_bus_freq(ulong dummy)
359 get_sys_info(&sys_info);
360 return sys_info.freq_systembus;
364 * Return the number of cores on this SOC.
366 int cpu_numcores(void)
369 * The QEMU u-boot target only needs to drive the first core,
370 * spinning and device tree nodes get driven by QEMU itself
376 * Return a 32-bit mask indicating which cores are present on this SOC.
380 return (1 << cpu_numcores()) - 1;