From 6fad7d1893f6ea926063067af957009bc320406f Mon Sep 17 00:00:00 2001 From: KONRAD Frederic Date: Thu, 3 May 2018 17:17:15 +0200 Subject: riscv: htif: increase the priority of the htif subregion The htif device is supposed to be mapped over an other subregion. So increase its priority to one to avoid any conflict. Here is the output of info mtree: Before: (qemu) info mtree address-space: memory 0000000000000000-ffffffffffffffff (prio 0, i/o): system 0000000000000000-000000000000000f (prio 0, i/o): riscv.htif.uart 0000000000000000-0000000000011fff (prio 0, ram): riscv.spike.bootrom 0000000002000000-000000000200ffff (prio 0, i/o): riscv.sifive.clint 0000000080000000-0000000087ffffff (prio 0, ram): riscv.spike.ram address-space: I/O 0000000000000000-000000000000ffff (prio 0, i/o): io address-space: cpu-memory-0 0000000000000000-ffffffffffffffff (prio 0, i/o): system 0000000000000000-000000000000000f (prio 0, i/o): riscv.htif.uart 0000000000000000-0000000000011fff (prio 0, ram): riscv.spike.bootrom 0000000002000000-000000000200ffff (prio 0, i/o): riscv.sifive.clint 0000000080000000-0000000087ffffff (prio 0, ram): riscv.spike.ram After: (qemu) info mtree address-space: memory 0000000000000000-ffffffffffffffff (prio 0, i/o): system 0000000000000000-000000000000000f (prio 1, i/o): riscv.htif.uart 0000000000000000-0000000000011fff (prio 0, ram): riscv.spike.bootrom 0000000002000000-000000000200ffff (prio 0, i/o): riscv.sifive.clint 0000000080000000-0000000087ffffff (prio 0, ram): riscv.spike.ram address-space: I/O 0000000000000000-000000000000ffff (prio 0, i/o): io address-space: cpu-memory-0 0000000000000000-ffffffffffffffff (prio 0, i/o): system 0000000000000000-000000000000000f (prio 1, i/o): riscv.htif.uart 0000000000000000-0000000000011fff (prio 0, ram): riscv.spike.bootrom 0000000002000000-000000000200ffff (prio 0, i/o): riscv.sifive.clint 0000000080000000-0000000087ffffff (prio 0, ram): riscv.spike.ram Reviewed-by: Michael Clark Signed-off-by: KONRAD Frederic Signed-off-by: Michael Clark Message-Id: <1525360636-18229-3-git-send-email-frederic.konrad@adacore.com> --- hw/riscv/riscv_htif.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'hw/riscv') diff --git a/hw/riscv/riscv_htif.c b/hw/riscv/riscv_htif.c index be252ec8cc..f73512941f 100644 --- a/hw/riscv/riscv_htif.c +++ b/hw/riscv/riscv_htif.c @@ -253,8 +253,9 @@ HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem, htif_be_change, s, NULL, true); if (address_symbol_set == 3) { memory_region_init_io(&s->mmio, NULL, &htif_mm_ops, s, - TYPE_HTIF_UART, size); - memory_region_add_subregion(address_space, base, &s->mmio); + TYPE_HTIF_UART, size); + memory_region_add_subregion_overlap(address_space, base, + &s->mmio, 1); } return s; -- cgit v1.2.3-55-g7522