I have asked a question about document.
https://groups.google.com/g/jailhouse-dev/c/cP_CdvN2uw0
The .pdf is the best doc.
Jailhouse is a "jailhouse" for everyone who want to know more about it.
在2021年4月1日星期四 UTC+8 下午8:56:48<曹宏鹏> 写道：
> Dear sir,
>
> I wanted to know how to write my own config files about non-root cell. By
> the way, I tried to alter the
> rpi4-linux-demo.c and compiled it. Of course, it was successful in that
> way.
>
> 1. But I don't understand why there are several memory regions definitions.
> 2. How to know the memory addresses.
> 3. How many memory regions should be defined.
>
> Whether should I reference the Raspberry Pi 4 model B's manual to resolve
> three questions.
> Here is the part of rpi4-linux-demo.c about memory definitions.(I didn't
> why there are 5 memory regions, 2 RAM definitions).
>
> .mem_regions = {
> /* IVSHMEM shared memory regions (demo) */
> {
> .phys_start = 0x3faf0000,
> .virt_start = 0x3faf0000,
> .size = 0x1000,
> .flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_ROOTSHARED,
> },
> {
> .phys_start = 0x3faf1000,
> .virt_start = 0x3faf1000,
> .size = 0x9000,
> .flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE |
> JAILHOUSE_MEM_ROOTSHARED,
> },
> {
> .phys_start = 0x3fafa000,
> .virt_start = 0x3fafa000,
> .size = 0x2000,
> .flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_ROOTSHARED,
> },
> {
> .phys_start = 0x3fafc000,
> .virt_start = 0x3fafc000,
> .size = 0x2000,
> .flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_ROOTSHARED,
> },
> {
> .phys_start = 0x3fafe000,
> .virt_start = 0x3fafe000,
> .size = 0x2000,
> .flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE |
> JAILHOUSE_MEM_ROOTSHARED,
> },
> /* IVSHMEM shared memory region */
> JAILHOUSE_SHMEM_NET_REGIONS(0x3fb00000, 1),
> /* UART */ {
> .phys_start = 0xfe215040,
> .virt_start = 0xfe215040,
> .size = 0x40,
> .flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE |
> JAILHOUSE_MEM_IO | JAILHOUSE_MEM_IO_8 |
> JAILHOUSE_MEM_IO_32 | JAILHOUSE_MEM_ROOTSHARED,
> },
> /* RAM */ {
> .phys_start = 0x3f900000,
> .virt_start = 0,
> .size = 0x10000,
> .flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE |
> JAILHOUSE_MEM_EXECUTE | JAILHOUSE_MEM_LOADABLE,
> },
> /* RAM */ {
> .phys_start = 0x30000000,
> .virt_start = 0x30000000,
> .size = 0x8000000,
> .flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE |
> JAILHOUSE_MEM_EXECUTE | JAILHOUSE_MEM_DMA |
> JAILHOUSE_MEM_LOADABLE,
> },
> /* communication region */ {
> .virt_start = 0x80000000,
> .size = 0x00001000,
> .flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE |
> JAILHOUSE_MEM_COMM_REGION,
> },
> }
>
> By the way, what information should I obtained so that I can write my own
> cell config.
> If I can get your generous help, I will appreciate.
> Thank you again !
>
> Yours sincerely,
> Hongpeng Cao.
>
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