29 lines
1.2 KiB
Plaintext
29 lines
1.2 KiB
Plaintext
<<<
|
|
:sectnums:
|
|
==== Bootloader ROM (BOOTROM)
|
|
|
|
[cols="<3,<3,<4"]
|
|
[frame="topbot",grid="none"]
|
|
|=======================
|
|
| Hardware source file(s): | neorv32_boot_rom.vhd |
|
|
| Software driver file(s): | none |
|
|
| Top entity port: | none |
|
|
| Configuration generics: | `INT_BOOTLOADER_EN` | implement processor-internal bootloader when `true`
|
|
| CPU interrupts: | none |
|
|
|=======================
|
|
|
|
This boot ROM module provides a read-only memory that contain the executable image of the default NEORV32
|
|
<<_bootloader>>. If the internal bootloader is enabled via the `INT_BOOTLOADER_EN` generic the CPU's boot address
|
|
is automatically set to the beginning of the bootloader ROM. See sections <<_address_space>> and
|
|
<<_boot_configuration>> for more information regarding the processor's different boot scenarios.
|
|
|
|
.Memory Size
|
|
[IMPORTANT]
|
|
If the configured boot ROM size is **not** a power of two the actual memory size will be auto-adjusted to
|
|
the next power of two (e.g. configuring a memory size of 6kB will result in a physical memory size of 8kB).
|
|
|
|
.Bootloader Image
|
|
[IMPORTANT]
|
|
The boot ROM is initialized during synthesis with the default bootloader image
|
|
(`rtl/core/neorv32_bootloader_image.vhd`).
|