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hw/nvram/nrf51_nvm: Add nRF51 non-volatile memories

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The nRF51 contains three regions of non-volatile memory (NVM):
- CODE (R/W): contains code
- FICR (R): Factory information like code size, chip id etc.
- UICR (R/W): Changeable configuration data. Lock bits, Code
  protection configuration, Bootloader address, Nordic SoftRadio
  configuration, Firmware configuration.

Read and write access to the memories is managed by the
Non-volatile memory controller.

Memory schema:
 [ CPU ] -+- [ NVM, either FICR, UICR or CODE ]
          |      |
          \- [ NVMC ]

Signed-off-by: Steffen Görtz <contrib@steffen-goertz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20190201023357.22596-2-stefanha@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Steffen Görtz 2019-02-01 10:33:55 +08:00 • committed by Peter Maydell
parent 1cf86a8618
commit c0d4eb8352
3 changed files with 453 additions and 0 deletions
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64
include/hw/nvram/nrf51_nvm.h Normal file
View file

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/*
* Nordic Semiconductor nRF51 non-volatile memory
*
* It provides an interface to erase regions in flash memory.
* Furthermore it provides the user and factory information registers.
*
* QEMU interface:
* + sysbus MMIO regions 0: NVMC peripheral registers
* + sysbus MMIO regions 1: FICR peripheral registers
* + sysbus MMIO regions 2: UICR peripheral registers
* + flash-size property: flash size in bytes.
*
* Accuracy of the peripheral model:
* + Code regions (MPU configuration) are disregarded.
*
* Copyright 2018 Steffen Görtz <contrib@steffen-goertz.de>
*
* This code is licensed under the GPL version 2 or later. See
* the COPYING file in the top-level directory.
*
*/
#ifndef NRF51_NVM_H
#define NRF51_NVM_H
#include "hw/sysbus.h"
#define TYPE_NRF51_NVM "nrf51_soc.nvm"
#define NRF51_NVM(obj) OBJECT_CHECK(NRF51NVMState, (obj), TYPE_NRF51_NVM)
#define NRF51_UICR_FIXTURE_SIZE 64
#define NRF51_NVMC_SIZE 0x1000
#define NRF51_NVMC_READY 0x400
#define NRF51_NVMC_READY_READY 0x01
#define NRF51_NVMC_CONFIG 0x504
#define NRF51_NVMC_CONFIG_MASK 0x03
#define NRF51_NVMC_CONFIG_WEN 0x01
#define NRF51_NVMC_CONFIG_EEN 0x02
#define NRF51_NVMC_ERASEPCR1 0x508
#define NRF51_NVMC_ERASEPCR0 0x510
#define NRF51_NVMC_ERASEALL 0x50C
#define NRF51_NVMC_ERASEUICR 0x514
#define NRF51_NVMC_ERASE 0x01
#define NRF51_UICR_SIZE 0x100
typedef struct NRF51NVMState {
SysBusDevice parent_obj;
MemoryRegion mmio;
MemoryRegion ficr;
MemoryRegion uicr;
MemoryRegion flash;
uint32_t uicr_content[NRF51_UICR_FIXTURE_SIZE];
uint32_t flash_size;
uint8_t *storage;
uint32_t config;
} NRF51NVMState;
#endif