Commit Graph

5 Commits

Author SHA1 Message Date
hangliu1
3041b2fd33 hv:riscv: add memory initizalization
add BSP and AP initialization function.
and call uart16550_init to update uart_base_address
after init paging.

Tracked-On: #8831
Signed-off-by: hangliu1 <hang1.liu@intel.com>
Reviewed-by: Fei Li <fei1.li@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
2025-10-21 14:14:55 +08:00
hangliu1
47ed22bef8 hv: riscv: add check for other memory mode
Check whether SV48 is supported, panic if not.

Tracked-On: #8831
Signed-off-by: hangliu1 <hang1.liu@intel.com>
Reviewed-by: Liu, Yifan1 <yifan1.liu@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
2025-10-21 14:14:55 +08:00
hangliu1
3d57581eb0 hv: riscv: page number calculate
this patch calculate riscv static pages number for page pool.
riscv donot need to map guest memory. use link script address
label to map code size.
For risc-v:
1) if the platform doesn't support PCIe devices
   The address space layout for risc-v is like

  |      |
  | MMIO |
  |      |
  | ...  |
  |      |
  | RAM  |
  |      |

For all its address space, one 1GB page table is enough which cover 512G
For MMIO or RAM, if its start address and end address is 1G aligned, there's no 2M
or 4K page table is needed. if their address are not 1G aligned, two 2M page table
is enough for MMIO or RAM. The issue here is that if we neetid 4K page entries for
different page attributes. So we need to reserve enough 4K page tables for that requirement.

2) if the platform support PCI devices, for the low MMIO range, another two 2MB page
table may needed. for the high MMIO range, its depends on the max physical address bits of
the platform and the high MMIO range reserved by the BIOS.

Tracked-On: #8831
Signed-off-by: hangliu1 <hang1.liu@intel.com>
Reviewed-by: Fei Li <fei1.li@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
2025-10-21 14:14:55 +08:00
hangliu1
52e7919d9f hv: riscv: add riscv memory interface
Add hypervisor pagetable manipulate interface to riscv arch directory,
which is needed by the common interface, and add riscv ppt pgtable
structure implementation.

Tracked-On: #8831
Signed-off-by: Haicheng Li <haicheng.li@intel.com>
Co-developed-by: hangliu1 <hang1.liu@intel.com>
Signed-off-by: hangliu1 <hang1.liu@intel.com>
Reviewed-by: Fei Li <fei1.li@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
2025-10-21 14:14:55 +08:00
Fei Li
0774a517a0 mmu: add dummy APIs for risc-v
This patch doesn's wrap a arch_xxx.

Tracked-On: #8805
Signed-off-by: Fei Li <fei1.li@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
2025-10-14 14:45:12 +08:00