1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2007,2009-2014 Freescale Semiconductor, Inc.
15 #include <asm/global_data.h>
16 #include <asm/processor.h>
18 #include <asm/fsl_pci.h>
20 #include <linux/libfdt.h>
21 #include <fdt_support.h>
27 DECLARE_GLOBAL_DATA_PTR;
29 static void *get_fdt_virt(void)
31 return (void *)CONFIG_SYS_TMPVIRT;
34 static uint64_t get_fdt_phys(void)
36 return (uint64_t)(uintptr_t)gd->fdt_blob;
39 static void map_fdt_as(int esel)
41 u32 mas0, mas1, mas2, mas3, mas7;
42 uint64_t fdt_phys = get_fdt_phys();
43 unsigned long fdt_phys_tlb = fdt_phys & ~0xffffful;
44 unsigned long fdt_virt_tlb = (ulong)get_fdt_virt() & ~0xffffful;
46 mas0 = MAS0_TLBSEL(1) | MAS0_ESEL(esel);
47 mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS | MAS1_TSIZE(BOOKE_PAGESZ_1M);
48 mas2 = FSL_BOOKE_MAS2(fdt_virt_tlb, 0);
49 mas3 = FSL_BOOKE_MAS3(fdt_phys_tlb, 0, MAS3_SW|MAS3_SR);
50 mas7 = FSL_BOOKE_MAS7(fdt_phys_tlb);
52 write_tlb(mas0, mas1, mas2, mas3, mas7);
55 uint64_t get_phys_ccsrbar_addr_early(void)
57 void *fdt = get_fdt_virt();
64 * To be able to read the FDT we need to create a temporary TLB
68 node = fdt_path_offset(fdt, "/soc");
69 naddr = fdt_address_cells(fdt, node);
70 prop = fdt_getprop(fdt, node, "ranges", &size);
71 r = fdt_translate_address(fdt, node, prop + naddr);
77 int board_early_init_f(void)
87 static int pci_map_region(void *fdt, int pci_node, int range_id,
88 phys_size_t *ppaddr, pci_addr_t *pvaddr,
89 pci_size_t *psize, ulong *pmap_addr)
96 r = fdt_read_range(fdt, pci_node, range_id, NULL, &addr, &size);
108 map_addr = *pmap_addr;
111 map_addr += size - 1;
112 map_addr &= ~(size - 1);
114 if (map_addr + size >= CONFIG_SYS_PCI_MAP_END)
117 /* Map virtual memory for range */
118 assert(!tlb_map_range(map_addr, addr, size, TLB_MAP_IO));
119 *pmap_addr = map_addr + size;
127 void pci_init_board(void)
129 struct pci_controller *pci_hoses;
130 void *fdt = get_fdt_virt();
138 /* Start MMIO and PIO range maps above RAM */
139 map_addr = CONFIG_SYS_PCI_MAP_START;
141 /* Count and allocate PCI buses */
142 pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
143 "device_type", "pci", 4);
144 while (pci_node != -FDT_ERR_NOTFOUND) {
145 pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
146 "device_type", "pci", 4);
151 pci_hoses = malloc(sizeof(struct pci_controller) * pci_count);
153 printf("PCI: disabled\n\n");
157 /* Spawn PCI buses based on device tree */
158 pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
159 "device_type", "pci", 4);
160 while (pci_node != -FDT_ERR_NOTFOUND) {
161 struct fsl_pci_info pci_info = { };
165 reg = fdt_getprop(fdt, pci_node, "reg", NULL);
166 pci_info.regs = fdt_translate_address(fdt, pci_node, reg);
169 r = pci_map_region(fdt, pci_node, 0, &pci_info.mem_phys, NULL,
170 &pci_info.mem_size, &map_addr);
175 r = pci_map_region(fdt, pci_node, 1, &pci_info.io_phys, NULL,
176 &pci_info.io_size, &map_addr);
181 * The PCI framework finds virtual addresses for the buses
182 * through our address map, so tell it the physical addresses.
184 pci_info.mem_bus = pci_info.mem_phys;
185 pci_info.io_bus = pci_info.io_phys;
188 pci_info.pci_num = pci_num + 1;
190 fsl_setup_hose(&pci_hoses[pci_num], pci_info.regs);
191 printf("PCI: base address %lx\n", pci_info.regs);
193 fsl_pci_init_port(&pci_info, &pci_hoses[pci_num], pci_num);
195 /* Jump to next PCI node */
196 pci_node = fdt_node_offset_by_prop_value(fdt, pci_node,
197 "device_type", "pci", 4);
204 int last_stage_init(void)
206 void *fdt = get_fdt_virt();
208 const uint64_t *prop;
211 chosen = fdt_path_offset(fdt, "/chosen");
213 printf("Couldn't find /chosen node in fdt\n");
218 prop = fdt_getprop(fdt, chosen, "qemu,boot-kernel", &len);
219 if (prop && (len >= 8))
220 env_set_hex("qemu_kernel_addr", *prop);
222 /* Give the user a variable for the host fdt */
223 env_set_hex("fdt_addr_r", (ulong)fdt);
228 static uint64_t get_linear_ram_size(void)
230 void *fdt = get_fdt_virt();
235 memory = fdt_path_offset(fdt, "/memory");
236 prop = fdt_getprop(fdt, memory, "reg", &len);
238 if (prop && len >= 16)
239 return *(uint64_t *)(prop+8);
241 panic("Couldn't determine RAM size");
244 int board_eth_init(struct bd_info *bis)
246 return pci_eth_init(bis);
249 #if defined(CONFIG_OF_BOARD_SETUP)
250 int ft_board_setup(void *blob, struct bd_info *bd)
258 void print_laws(void)
260 /* We don't emulate LAWs yet */
263 phys_size_t fixed_sdram(void)
265 return get_linear_ram_size();
268 phys_size_t fsl_ddr_sdram_size(void)
270 return get_linear_ram_size();
275 phys_size_t ram_size;
278 * Create a temporary AS=1 map for the fdt
280 * We use ESEL=0 here to overwrite the previous AS=0 map for ourselves
281 * which was only 4k big. This way we don't have to clear any other maps.
285 /* Fetch RAM size from the fdt */
286 ram_size = get_linear_ram_size();
288 /* And remove our fdt map again */
291 /* Create an internal map of manually created TLB maps */
292 init_used_tlb_cams();
294 /* Create a dynamic AS=0 CCSRBAR mapping */
295 assert(!tlb_map_range(CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
296 1024 * 1024, TLB_MAP_IO));
298 /* Create a RAM map that spans all accessible RAM */
299 setup_ddr_tlbs(ram_size >> 20);
301 /* Create a map for the TLB */
302 assert(!tlb_map_range((ulong)get_fdt_virt(), get_fdt_phys(),
303 1024 * 1024, TLB_MAP_RAM));
308 /* We don't emulate LAWs yet */
311 static uint32_t get_cpu_freq(void)
313 void *fdt = get_fdt_virt();
314 int cpus_node = fdt_path_offset(fdt, "/cpus");
315 int cpu_node = fdt_first_subnode(fdt, cpus_node);
316 const char *prop = "clock-frequency";
317 return fdt_getprop_u32_default_node(fdt, cpu_node, 0, prop, 0);
320 void get_sys_info(sys_info_t *sys_info)
322 int freq = get_cpu_freq();
324 memset(sys_info, 0, sizeof(sys_info_t));
325 sys_info->freq_systembus = freq;
326 sys_info->freq_ddrbus = freq;
327 sys_info->freq_processor[0] = freq;
334 get_sys_info(&sys_info);
336 gd->cpu_clk = sys_info.freq_processor[0];
337 gd->bus_clk = sys_info.freq_systembus;
338 gd->mem_clk = sys_info.freq_ddrbus;
339 gd->arch.lbc_clk = sys_info.freq_ddrbus;
344 unsigned long get_tbclk(void)
346 void *fdt = get_fdt_virt();
347 int cpus_node = fdt_path_offset(fdt, "/cpus");
348 int cpu_node = fdt_first_subnode(fdt, cpus_node);
349 const char *prop = "timebase-frequency";
350 return fdt_getprop_u32_default_node(fdt, cpu_node, 0, prop, 0);
353 /********************************************
355 * return system bus freq in Hz
356 *********************************************/
357 ulong get_bus_freq(ulong dummy)
360 get_sys_info(&sys_info);
361 return sys_info.freq_systembus;
365 * Return the number of cores on this SOC.
367 int cpu_numcores(void)
370 * The QEMU u-boot target only needs to drive the first core,
371 * spinning and device tree nodes get driven by QEMU itself
377 * Return a 32-bit mask indicating which cores are present on this SOC.
381 return (1 << cpu_numcores()) - 1;