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28 lines
979 B
Markdown
28 lines
979 B
Markdown
# Tutorial 0F - DMA Memory
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Coming soon!
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This lesson will teach about:
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- Simple bump memory allocators and non-cacheable memory.
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- Using MiniUart for early boot messages and dynamically switching to the PL011
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Uart later (which now needs the memory allocator that theoretically could fail
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- which the MiniUart could then print).
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```console
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[0] MiniUart online.
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[1] Press a key to continue booting... Greetings fellow Rustacean!
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[2] Switching MMU on now... MMU online.
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[i] Memory layout:
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0x00000000 - 0x0007FFFF | 512 KiB | Kernel stack
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0x00080000 - 0x00083FFF | 16 KiB | Kernel code and RO data
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0x00084000 - 0x00087007 | 12 KiB | Kernel data and BSS
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0x00200000 - 0x005FFFFF | 4 MiB | DMA heap pool
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0x3F000000 - 0x3FFFFFFF | 16 MiB | Device MMIO
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[i] Global DMA Allocator:
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Allocated Addr 0x00200000 Size 0x90
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[3] Videocore Mailbox set up (DMA mem heap allocation successful).
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[4] PL011 UART online. Output switched to it.
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$>
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```
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