qemu-e2k/hw/riscv
Atish Patra 1a475d39ef RISC-V: Place DTB at 3GB boundary instead of 4GB
Currently, we place the DTB at 2MB from 4GB or end of DRAM which ever is
lesser. However, Linux kernel can address only 1GB of memory for RV32.
Thus, it can not map anything beyond 3GB (assuming 2GB is the starting address).
As a result, it can not process DT and panic if opensbi dynamic firmware
is used. While at it, place the DTB further away to avoid in memory placement
issues in future.

Fix this by placing the DTB at 16MB from 3GB or end of DRAM whichever is lower.

Fixes: 66b1205bc5 ("RISC-V: Copy the fdt in dram instead of ROM")

Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Message-id: 20210107091127.3407870-1-atish.patra@wdc.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-01-16 10:57:21 -08:00
..
Kconfig hw/riscv: microchip_pfsoc: Connect the SYSREG module 2020-11-03 07:17:23 -08:00
boot.c RISC-V: Place DTB at 3GB boundary instead of 4GB 2021-01-16 10:57:21 -08:00
meson.build hw/riscv: Always build riscv_hart.c 2020-09-09 15:54:19 -07:00
microchip_pfsoc.c hw/riscv: microchip_pfsoc: add QSPI NOR flash 2020-12-17 21:56:43 -08:00
numa.c hw/riscv: Add helpers for RISC-V multi-socket NUMA machines 2020-08-25 09:11:35 -07:00
opentitan.c riscv/opentitan: Update the OpenTitan memory layout 2020-12-17 21:56:44 -08:00
riscv_hart.c hw/riscv: hart: Add a new 'resetvec' property 2020-09-09 15:54:18 -07:00
sifive_e.c hw/riscv: Load the kernel after the firmware 2020-10-22 12:00:22 -07:00
sifive_u.c hw/riscv: Use the CPU to determine if 32-bit 2020-12-17 21:56:44 -08:00
spike.c hw/riscv: Use the CPU to determine if 32-bit 2020-12-17 21:56:44 -08:00
virt.c hw/riscv: Use the CPU to determine if 32-bit 2020-12-17 21:56:44 -08:00