2 * QEMU aCube Sam460ex board emulation
4 * Copyright (c) 2012 François Revol
5 * Copyright (c) 2016-2019 BALATON Zoltan
7 * This file is derived from hw/ppc440_bamboo.c,
8 * the copyright for that material belongs to the original owners.
10 * This work is licensed under the GNU GPL license version 2 or later.
14 #include "qemu/osdep.h"
15 #include "qemu/units.h"
16 #include "qemu/datadir.h"
17 #include "qemu/error-report.h"
18 #include "qapi/error.h"
19 #include "hw/boards.h"
20 #include "sysemu/kvm.h"
22 #include "sysemu/device_tree.h"
23 #include "sysemu/block-backend.h"
24 #include "hw/loader.h"
26 #include "exec/memory.h"
28 #include "hw/block/flash.h"
29 #include "sysemu/sysemu.h"
30 #include "sysemu/reset.h"
31 #include "hw/sysbus.h"
32 #include "hw/char/serial.h"
33 #include "hw/i2c/ppc4xx_i2c.h"
34 #include "hw/i2c/smbus_eeprom.h"
35 #include "hw/usb/hcd-ehci.h"
36 #include "hw/ppc/fdt.h"
37 #include "hw/qdev-properties.h"
38 #include "hw/intc/ppc-uic.h"
42 #define BINARY_DEVICE_TREE_FILE "canyonlands.dtb"
43 #define UBOOT_FILENAME "u-boot-sam460-20100605.bin"
44 /* to extract the official U-Boot bin from the updater: */
45 /* dd bs=1 skip=$(($(stat -c '%s' updater/updater-460) - 0x80000)) \
46 if=updater/updater-460 of=u-boot-sam460-20100605.bin */
48 /* from Sam460 U-Boot include/configs/Sam460ex.h */
49 #define FLASH_BASE 0xfff00000
50 #define FLASH_BASE_H 0x4
51 #define FLASH_SIZE (1 * MiB)
52 #define UBOOT_LOAD_BASE 0xfff80000
53 #define UBOOT_SIZE 0x00080000
54 #define UBOOT_ENTRY 0xfffffffc
57 #define EPAPR_MAGIC (0x45504150)
58 #define KERNEL_ADDR 0x1000000
59 #define FDT_ADDR 0x1800000
60 #define RAMDISK_ADDR 0x1900000
65 IRQ2 = PCI_INT (PCIA, PCIB, PCIC, PCIB)
71 #define CPU_FREQ 1150000000
72 #define PLB_FREQ 230000000
73 #define OPB_FREQ 115000000
74 #define EBC_FREQ 115000000
75 #define UART_FREQ 11059200
77 /* The SoC could also handle 4 GiB but firmware does not work with that. */
78 /* Maybe it overflows a signed 32 bit number somewhere? */
79 static const ram_addr_t ppc460ex_sdram_bank_sizes
[] = {
80 2 * GiB
, 1 * GiB
, 512 * MiB
, 256 * MiB
, 128 * MiB
, 64 * MiB
,
90 static int sam460ex_load_uboot(void)
93 * This first creates 1MiB of flash memory mapped at the end of
94 * the 32-bit address space (0xFFF00000..0xFFFFFFFF).
96 * If_PFLASH unit 0 is defined, the flash memory is initialized
97 * from that block backend.
99 * Else, it's initialized to zero. And then 512KiB of ROM get
100 * mapped on top of its second half (0xFFF80000..0xFFFFFFFF),
101 * initialized from u-boot-sam460-20100605.bin.
103 * This doesn't smell right.
105 * The physical hardware appears to have 512KiB flash memory.
107 * TODO Figure out what we really need here, and clean this up.
112 dinfo
= drive_get(IF_PFLASH
, 0, 0);
113 if (!pflash_cfi01_register(FLASH_BASE
| ((hwaddr
)FLASH_BASE_H
<< 32),
114 "sam460ex.flash", FLASH_SIZE
,
115 dinfo
? blk_by_legacy_dinfo(dinfo
) : NULL
,
116 64 * KiB
, 1, 0x89, 0x18, 0x0000, 0x0, 1)) {
117 error_report("Error registering flash memory");
118 /* XXX: return an error instead? */
123 /*error_report("No flash image given with the 'pflash' parameter,"
124 " using default u-boot image");*/
125 rom_add_file_fixed(UBOOT_FILENAME
,
126 UBOOT_LOAD_BASE
| ((hwaddr
)FLASH_BASE_H
<< 32),
133 static int sam460ex_load_device_tree(hwaddr addr
,
137 const char *kernel_cmdline
)
139 uint32_t mem_reg_property
[] = { 0, 0, cpu_to_be32(ramsize
) };
143 uint32_t tb_freq
= CPU_FREQ
;
144 uint32_t clock_freq
= CPU_FREQ
;
147 filename
= qemu_find_file(QEMU_FILE_TYPE_BIOS
, BINARY_DEVICE_TREE_FILE
);
149 error_report("Couldn't find dtb file `%s'", BINARY_DEVICE_TREE_FILE
);
152 fdt
= load_device_tree(filename
, &fdt_size
);
154 error_report("Couldn't load dtb file `%s'", filename
);
160 /* Manipulate device tree in memory. */
162 qemu_fdt_setprop(fdt
, "/memory", "reg", mem_reg_property
,
163 sizeof(mem_reg_property
));
165 /* default FDT doesn't have a /chosen node... */
166 qemu_fdt_add_subnode(fdt
, "/chosen");
168 qemu_fdt_setprop_cell(fdt
, "/chosen", "linux,initrd-start", initrd_base
);
170 qemu_fdt_setprop_cell(fdt
, "/chosen", "linux,initrd-end",
171 (initrd_base
+ initrd_size
));
173 qemu_fdt_setprop_string(fdt
, "/chosen", "bootargs", kernel_cmdline
);
175 /* Copy data from the host device tree into the guest. Since the guest can
176 * directly access the timebase without host involvement, we must expose
177 * the correct frequencies. */
179 tb_freq
= kvmppc_get_tbfreq();
180 clock_freq
= kvmppc_get_clockfreq();
183 qemu_fdt_setprop_cell(fdt
, "/cpus/cpu@0", "clock-frequency",
185 qemu_fdt_setprop_cell(fdt
, "/cpus/cpu@0", "timebase-frequency",
188 /* Remove cpm node if it exists (it is not emulated) */
189 offset
= fdt_path_offset(fdt
, "/cpm");
191 _FDT(fdt_nop_node(fdt
, offset
));
194 /* set serial port clocks */
195 offset
= fdt_node_offset_by_compatible(fdt
, -1, "ns16550");
196 while (offset
>= 0) {
197 _FDT(fdt_setprop_cell(fdt
, offset
, "clock-frequency", UART_FREQ
));
198 offset
= fdt_node_offset_by_compatible(fdt
, offset
, "ns16550");
201 /* some more clocks */
202 qemu_fdt_setprop_cell(fdt
, "/plb", "clock-frequency",
204 qemu_fdt_setprop_cell(fdt
, "/plb/opb", "clock-frequency",
206 qemu_fdt_setprop_cell(fdt
, "/plb/opb/ebc", "clock-frequency",
209 rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE
, fdt
, fdt_size
, addr
);
215 /* Create reset TLB entries for BookE, mapping only the flash memory. */
216 static void mmubooke_create_initial_mapping_uboot(CPUPPCState
*env
)
218 ppcemb_tlb_t
*tlb
= &env
->tlb
.tlbe
[0];
220 /* on reset the flash is mapped by a shadow TLB,
221 * but since we don't implement them we need to use
222 * the same values U-Boot will use to avoid a fault.
225 tlb
->prot
= PAGE_VALID
| ((PAGE_READ
| PAGE_WRITE
| PAGE_EXEC
) << 4);
226 tlb
->size
= 0x10000000; /* up to 0xffffffff */
227 tlb
->EPN
= 0xf0000000 & TARGET_PAGE_MASK
;
228 tlb
->RPN
= (0xf0000000 & TARGET_PAGE_MASK
) | 0x4;
232 /* Create reset TLB entries for BookE, spanning the 32bit addr space. */
233 static void mmubooke_create_initial_mapping(CPUPPCState
*env
,
237 ppcemb_tlb_t
*tlb
= &env
->tlb
.tlbe
[0];
240 tlb
->prot
= PAGE_VALID
| ((PAGE_READ
| PAGE_WRITE
| PAGE_EXEC
) << 4);
241 tlb
->size
= 1 << 31; /* up to 0x80000000 */
242 tlb
->EPN
= va
& TARGET_PAGE_MASK
;
243 tlb
->RPN
= pa
& TARGET_PAGE_MASK
;
247 static void main_cpu_reset(void *opaque
)
249 PowerPCCPU
*cpu
= opaque
;
250 CPUPPCState
*env
= &cpu
->env
;
251 struct boot_info
*bi
= env
->load_info
;
255 /* either we have a kernel to boot or we jump to U-Boot */
256 if (bi
->entry
!= UBOOT_ENTRY
) {
257 env
->gpr
[1] = (16 * MiB
) - 8;
258 env
->gpr
[3] = FDT_ADDR
;
259 env
->nip
= bi
->entry
;
261 /* Create a mapping for the kernel. */
262 mmubooke_create_initial_mapping(env
, 0, 0);
263 env
->gpr
[6] = tswap32(EPAPR_MAGIC
);
264 env
->gpr
[7] = (16 * MiB
) - 8; /* bi->ima_size; */
267 env
->nip
= UBOOT_ENTRY
;
268 mmubooke_create_initial_mapping_uboot(env
);
272 static void sam460ex_init(MachineState
*machine
)
274 MemoryRegion
*address_space_mem
= get_system_memory();
275 MemoryRegion
*isa
= g_new(MemoryRegion
, 1);
276 Ppc4xxSdramBank
*ram_banks
= g_new0(Ppc4xxSdramBank
, 1);
277 MemoryRegion
*l2cache_ram
= g_new(MemoryRegion
, 1);
284 hwaddr entry
= UBOOT_ENTRY
;
285 target_long initrd_size
= 0;
288 struct boot_info
*boot_info
;
292 cpu
= POWERPC_CPU(cpu_create(machine
->cpu_type
));
294 if (env
->mmu_model
!= POWERPC_MMU_BOOKE
) {
295 error_report("Only MMU model BookE is supported by this machine.");
299 qemu_register_reset(main_cpu_reset
, cpu
);
300 boot_info
= g_malloc0(sizeof(*boot_info
));
301 env
->load_info
= boot_info
;
303 ppc_booke_timers_init(cpu
, CPU_FREQ
, 0);
304 ppc_dcr_init(env
, NULL
, NULL
);
307 dev
= qdev_new(TYPE_PPC4xx_PLB
);
308 ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(dev
), cpu
, &error_fatal
);
309 object_unref(OBJECT(dev
));
311 /* interrupt controllers */
312 for (i
= 0; i
< ARRAY_SIZE(uic
); i
++) {
314 * UICs 1, 2 and 3 are cascaded through UIC 0.
315 * input_ints[n] is the interrupt number on UIC 0 which
316 * the INT output of UIC n is connected to. The CINT output
317 * of UIC n connects to input_ints[n] + 1.
318 * The entry in input_ints[] for UIC 0 is ignored, because UIC 0's
319 * INT and CINT outputs are connected to the CPU.
321 const int input_ints
[] = { -1, 30, 10, 16 };
323 uic
[i
] = qdev_new(TYPE_PPC_UIC
);
324 qdev_prop_set_uint32(uic
[i
], "dcr-base", 0xc0 + i
* 0x10);
325 ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(uic
[i
]), cpu
, &error_fatal
);
326 object_unref(OBJECT(uic
[i
]));
328 sbdev
= SYS_BUS_DEVICE(uic
[i
]);
330 sysbus_connect_irq(sbdev
, PPCUIC_OUTPUT_INT
,
331 qdev_get_gpio_in(DEVICE(cpu
), PPC40x_INPUT_INT
));
332 sysbus_connect_irq(sbdev
, PPCUIC_OUTPUT_CINT
,
333 qdev_get_gpio_in(DEVICE(cpu
), PPC40x_INPUT_CINT
));
335 sysbus_connect_irq(sbdev
, PPCUIC_OUTPUT_INT
,
336 qdev_get_gpio_in(uic
[0], input_ints
[i
]));
337 sysbus_connect_irq(sbdev
, PPCUIC_OUTPUT_CINT
,
338 qdev_get_gpio_in(uic
[0], input_ints
[i
] + 1));
342 /* SDRAM controller */
343 /* put all RAM on first bank because board has one slot
344 * and firmware only checks that */
345 ppc4xx_sdram_banks(machine
->ram
, 1, ram_banks
, ppc460ex_sdram_bank_sizes
);
347 /* FIXME: does 460EX have ECC interrupts? */
348 ppc440_sdram_init(env
, 1, ram_banks
, 1);
350 /* IIC controllers and devices */
351 dev
= sysbus_create_simple(TYPE_PPC4xx_I2C
, 0x4ef600700,
352 qdev_get_gpio_in(uic
[0], 2));
353 i2c
= PPC4xx_I2C(dev
)->bus
;
354 /* SPD EEPROM on RAM module */
355 spd_data
= spd_data_generate(ram_banks
->size
< 128 * MiB
? DDR
: DDR2
,
357 spd_data
[20] = 4; /* SO-DIMM module */
358 smbus_eeprom_init_one(i2c
, 0x50, spd_data
);
360 i2c_slave_create_simple(i2c
, "m41t80", 0x68);
362 dev
= sysbus_create_simple(TYPE_PPC4xx_I2C
, 0x4ef600800,
363 qdev_get_gpio_in(uic
[0], 3));
365 /* External bus controller */
366 dev
= qdev_new(TYPE_PPC4xx_EBC
);
367 ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(dev
), cpu
, &error_fatal
);
368 object_unref(OBJECT(dev
));
371 ppc4xx_cpr_init(env
);
373 /* PLB to AHB bridge */
374 ppc4xx_ahb_init(env
);
377 ppc4xx_sdr_init(env
);
380 dev
= qdev_new(TYPE_PPC4xx_MAL
);
381 qdev_prop_set_uint32(dev
, "txc-num", 4);
382 qdev_prop_set_uint32(dev
, "rxc-num", 16);
383 ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(dev
), cpu
, &error_fatal
);
384 object_unref(OBJECT(dev
));
385 sbdev
= SYS_BUS_DEVICE(dev
);
386 for (i
= 0; i
< ARRAY_SIZE(PPC4xx_MAL(dev
)->irqs
); i
++) {
387 sysbus_connect_irq(sbdev
, i
, qdev_get_gpio_in(uic
[2], 3 + i
));
391 ppc4xx_dma_init(env
, 0x200);
393 /* 256K of L2 cache as memory */
394 ppc4xx_l2sram_init(env
);
395 /* FIXME: remove this after fixing l2sram mapping in ppc440_uc.c? */
396 memory_region_init_ram(l2cache_ram
, NULL
, "ppc440.l2cache_ram", 256 * KiB
,
398 memory_region_add_subregion(address_space_mem
, 0x400000000LL
, l2cache_ram
);
401 sysbus_create_simple(TYPE_PPC4xx_EHCI
, 0x4bffd0400,
402 qdev_get_gpio_in(uic
[2], 29));
403 dev
= qdev_new("sysbus-ohci");
404 qdev_prop_set_string(dev
, "masterbus", "usb-bus.0");
405 qdev_prop_set_uint32(dev
, "num-ports", 6);
406 sbdev
= SYS_BUS_DEVICE(dev
);
407 sysbus_realize_and_unref(sbdev
, &error_fatal
);
408 sysbus_mmio_map(sbdev
, 0, 0x4bffd0000);
409 sysbus_connect_irq(sbdev
, 0, qdev_get_gpio_in(uic
[2], 30));
410 usb_create_simple(usb_bus_find(-1), "usb-kbd");
411 usb_create_simple(usb_bus_find(-1), "usb-mouse");
414 ppc460ex_pcie_init(env
);
415 /* All PCI irqs are connected to the same UIC pin (cf. UBoot source) */
416 dev
= sysbus_create_simple("ppc440-pcix-host", 0xc0ec00000,
417 qdev_get_gpio_in(uic
[1], 0));
418 pci_bus
= PCI_BUS(qdev_get_child_bus(dev
, "pci.0"));
420 memory_region_init_alias(isa
, NULL
, "isa_mmio", get_system_io(),
422 memory_region_add_subregion(get_system_memory(), 0xc08000000, isa
);
425 pci_create_simple(pci_bus
, PCI_DEVFN(6, 0), "sm501");
426 /* SoC has a single SATA port but we don't emulate that yet
427 * However, firmware and usual clients have driver for SiI311x
428 * so add one for convenience by default */
429 if (defaults_enabled()) {
430 pci_create_simple(pci_bus
, -1, "sii3112");
434 * but board has only one wired and two are present in fdt */
435 if (serial_hd(0) != NULL
) {
436 serial_mm_init(address_space_mem
, 0x4ef600300, 0,
437 qdev_get_gpio_in(uic
[1], 1),
438 PPC_SERIAL_MM_BAUDBASE
, serial_hd(0),
441 if (serial_hd(1) != NULL
) {
442 serial_mm_init(address_space_mem
, 0x4ef600400, 0,
443 qdev_get_gpio_in(uic
[0], 1),
444 PPC_SERIAL_MM_BAUDBASE
, serial_hd(1),
448 /* Load U-Boot image. */
449 if (!machine
->kernel_filename
) {
450 success
= sam460ex_load_uboot();
452 error_report("could not load firmware");
458 if (machine
->kernel_filename
) {
459 hwaddr loadaddr
= LOAD_UIMAGE_LOADADDR_INVALID
;
460 success
= load_uimage(machine
->kernel_filename
, &entry
, &loadaddr
,
465 success
= load_elf(machine
->kernel_filename
, NULL
, NULL
, NULL
,
466 &elf_entry
, NULL
, NULL
, NULL
,
467 1, PPC_ELF_MACHINE
, 0, 0);
470 /* XXX try again as binary */
472 error_report("could not load kernel '%s'",
473 machine
->kernel_filename
);
479 if (machine
->initrd_filename
) {
480 initrd_size
= load_image_targphys(machine
->initrd_filename
,
482 machine
->ram_size
- RAMDISK_ADDR
);
483 if (initrd_size
< 0) {
484 error_report("could not load ram disk '%s' at %x",
485 machine
->initrd_filename
, RAMDISK_ADDR
);
490 /* If we're loading a kernel directly, we must load the device tree too. */
491 if (machine
->kernel_filename
) {
494 dt_size
= sam460ex_load_device_tree(FDT_ADDR
, machine
->ram_size
,
495 RAMDISK_ADDR
, initrd_size
,
496 machine
->kernel_cmdline
);
498 boot_info
->dt_base
= FDT_ADDR
;
499 boot_info
->dt_size
= dt_size
;
502 boot_info
->entry
= entry
;
505 static void sam460ex_machine_init(MachineClass
*mc
)
507 mc
->desc
= "aCube Sam460ex";
508 mc
->init
= sam460ex_init
;
509 mc
->default_cpu_type
= POWERPC_CPU_TYPE_NAME("460exb");
510 mc
->default_ram_size
= 512 * MiB
;
511 mc
->default_ram_id
= "ppc4xx.sdram";
514 DEFINE_MACHINE("sam460ex", sam460ex_machine_init
)