2  * Nordic Semiconductor nRF51 non-volatile memory
9  * See nRF51 reference manual and product sheet sections:
10  * + Non-Volatile Memory Controller (NVMC)
14  * Copyright 2018 Steffen Görtz <contrib@steffen-goertz.de>
17  * the COPYING file in the top-level directory.
26 #include "hw/qdev-properties.h"
175     assert(offset < sizeof(s->uicr_content));  in uicr_read()
176     return s->uicr_content[offset / 4];  in uicr_read()
184     assert(offset < sizeof(s->uicr_content));  in uicr_write()
185     s->uicr_content[offset / 4] = value;  in uicr_write()
207         r = s->config;  in io_read()
225         s->config = value & NRF51_NVMC_CONFIG_MASK;  in io_write()
229         if (s->config & NRF51_NVMC_CONFIG_EEN) {  in io_write()
230             /* Mask in-page sub address */  in io_write()
231             value &= ~(NRF51_PAGE_SIZE - 1);  in io_write()
232             if (value <= (s->flash_size - NRF51_PAGE_SIZE)) {  in io_write()
233                 memset(s->storage + value, 0xFF, NRF51_PAGE_SIZE);  in io_write()
234                 memory_region_flush_rom_device(&s->flash, value,  in io_write()
245             if (s->config & NRF51_NVMC_CONFIG_EEN) {  in io_write()
246                 memset(s->storage, 0xFF, s->flash_size);  in io_write()
247                 memory_region_flush_rom_device(&s->flash, 0, s->flash_size);  in io_write()
248                 memset(s->uicr_content, 0xFF, sizeof(s->uicr_content));  in io_write()
257             memset(s->uicr_content, 0xFF, sizeof(s->uicr_content));  in io_write()
290     if (s->config & NRF51_NVMC_CONFIG_WEN) {  in flash_write()
293         assert(offset + size <= s->flash_size);  in flash_write()
296         oldval = ldl_le_p(s->storage + offset);  in flash_write()
298         stl_le_p(s->storage + offset, oldval);  in flash_write()
300         memory_region_flush_rom_device(&s->flash, offset, size);  in flash_write()
323     memory_region_init_io(&s->mmio, obj, &io_ops, s, "nrf51_soc.nvmc",  in nrf51_nvm_init()
325     sysbus_init_mmio(sbd, &s->mmio);  in nrf51_nvm_init()
327     memory_region_init_io(&s->ficr, obj, &ficr_ops, s, "nrf51_soc.ficr",  in nrf51_nvm_init()
329     sysbus_init_mmio(sbd, &s->ficr);  in nrf51_nvm_init()
331     memory_region_init_io(&s->uicr, obj, &uicr_ops, s, "nrf51_soc.uicr",  in nrf51_nvm_init()
332                           sizeof(s->uicr_content));  in nrf51_nvm_init()
333     sysbus_init_mmio(sbd, &s->uicr);  in nrf51_nvm_init()
340     if (!memory_region_init_rom_device(&s->flash, OBJECT(dev), &flash_ops, s,  in nrf51_nvm_realize()
341                                        "nrf51_soc.flash", s->flash_size, errp)) {  in nrf51_nvm_realize()
345     s->storage = memory_region_get_ram_ptr(&s->flash);  in nrf51_nvm_realize()
346     sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->flash);  in nrf51_nvm_realize()
353     s->config = 0x00;  in nrf51_nvm_reset()
354     memset(s->uicr_content, 0xFF, sizeof(s->uicr_content));  in nrf51_nvm_reset()
358     DEFINE_PROP_UINT32("flash-size", NRF51NVMState, flash_size, 0x40000),
373 static void nrf51_nvm_class_init(ObjectClass *klass, const void *data)  in nrf51_nvm_class_init()  argument
378     dc->vmsd = &vmstate_nvm;  in nrf51_nvm_class_init()
379     dc->realize = nrf51_nvm_realize;  in nrf51_nvm_class_init()