Hi Rayhan,
On 10/5/24 16:10, Rayhan Faizel wrote:
The OTP device registers are currently stubbed. For now, the device
houses the OTP rows which will be accessed directly by other peripherals.
Signed-off-by: Rayhan Faizel <rayhan.fai...@gmail.com>
---
hw/nvram/bcm2835_otp.c | 187 +++++++++++++++++++++++++++++++++
hw/nvram/meson.build | 1 +
include/hw/nvram/bcm2835_otp.h | 43 ++++++++
3 files changed, 231 insertions(+)
create mode 100644 hw/nvram/bcm2835_otp.c
create mode 100644 include/hw/nvram/bcm2835_otp.h
+static void bcm2835_otp_write(void *opaque, hwaddr addr,
+ uint64_t value, unsigned int size)
+{
+ switch (addr) {
+ case BCM2835_OTP_BOOTMODE_REG:
+ qemu_log_mask(LOG_UNIMP,
+ "bcm2835_otp: BCM2835_OTP_BOOTMODE_REG\n");
+ break;
+ case BCM2835_OTP_CONFIG_REG:
+ qemu_log_mask(LOG_UNIMP,
+ "bcm2835_otp: BCM2835_OTP_CONFIG_REG\n");
+ break;
+ case BCM2835_OTP_CTRL_LO_REG:
+ qemu_log_mask(LOG_UNIMP,
+ "bcm2835_otp: BCM2835_OTP_CTRL_LO_REG\n");
+ break;
+ case BCM2835_OTP_CTRL_HI_REG:
+ qemu_log_mask(LOG_UNIMP,
+ "bcm2835_otp: BCM2835_OTP_CTRL_HI_REG\n");
+ break;
+ case BCM2835_OTP_STATUS_REG:
+ qemu_log_mask(LOG_UNIMP,
+ "bcm2835_otp: BCM2835_OTP_STATUS_REG\n");
+ break;
+ case BCM2835_OTP_BITSEL_REG:
+ qemu_log_mask(LOG_UNIMP,
+ "bcm2835_otp: BCM2835_OTP_BITSEL_REG\n");
+ break;
+ case BCM2835_OTP_DATA_REG:
+ qemu_log_mask(LOG_UNIMP,
+ "bcm2835_otp: BCM2835_OTP_DATA_REG\n");
+ break;
+ case BCM2835_OTP_ADDR_REG:
+ qemu_log_mask(LOG_UNIMP,
+ "bcm2835_otp: BCM2835_OTP_ADDR_REG\n");
+ break;
+ case BCM2835_OTP_WRITE_DATA_READ_REG:
+ qemu_log_mask(LOG_UNIMP,
+ "bcm2835_otp: BCM2835_OTP_WRITE_DATA_READ_REG\n");
+ break;
+ case BCM2835_OTP_INIT_STATUS_REG:
+ qemu_log_mask(LOG_UNIMP,
+ "bcm2835_otp: BCM2835_OTP_INIT_STATUS_REG\n");
+ break;
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Bad offset 0x%" HWADDR_PRIx "\n", __func__, addr);
+ }
+}
+
+static const MemoryRegionOps bcm2835_otp_ops = {
+ .read = bcm2835_otp_read,
+ .write = bcm2835_otp_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .valid = {
s/valid/impl/ here, this is your implementation. It isn't illegal to
access these registers with a non 32-bit size.
+ .min_access_size = 4,
+ .max_access_size = 4,
+ },
+};
+/* https://elinux.org/BCM2835_registers#OTP */
+#define BCM2835_OTP_BOOTMODE_REG 0x00
+#define BCM2835_OTP_CONFIG_REG 0x04
+#define BCM2835_OTP_CTRL_LO_REG 0x08
+#define BCM2835_OTP_CTRL_HI_REG 0x0c
+#define BCM2835_OTP_STATUS_REG 0x10
+#define BCM2835_OTP_BITSEL_REG 0x14
+#define BCM2835_OTP_DATA_REG 0x18
+#define BCM2835_OTP_ADDR_REG 0x1c
+#define BCM2835_OTP_WRITE_DATA_READ_REG 0x20
+#define BCM2835_OTP_INIT_STATUS_REG 0x24
