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nvram: add nrf51_soc flash read method

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Add nrf51_soc mmio read method to avoid NULL pointer dereference
issue.

Reported-by: Lei Sun <slei.casper@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <20200811114133.672647-6-ppandit@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Prasad J Pandit 2020-08-11 17:11:29 +05:30 committed by Paolo Bonzini
parent f867cebaed
commit b5bf601f36
1 changed files with 10 additions and 0 deletions
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10
hw/nvram/nrf51_nvm.c
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@ -273,6 +273,15 @@ static const MemoryRegionOps io_ops = {
.endianness = DEVICE_LITTLE_ENDIAN,
};
static uint64_t flash_read(void *opaque, hwaddr offset, unsigned size)
{
/*
* This is a rom_device MemoryRegion which is always in
* romd_mode (we never put it in MMIO mode), so reads always
* go directly to RAM and never come here.
*/
g_assert_not_reached();
}
static void flash_write(void *opaque, hwaddr offset, uint64_t value,
unsigned int size)
@ -300,6 +309,7 @@ static void flash_write(void *opaque, hwaddr offset, uint64_t value,
static const MemoryRegionOps flash_ops = {
.read = flash_read,
.write = flash_write,
.valid.min_access_size = 4,
.valid.max_access_size = 4,