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nova: export kernel messages via memory

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Fixes #2207
This commit is contained in:
Alexander Boettcher
2016-05-28 20:54:24 +02:00
committed by Christian Helmuth
parent 38d5a5bf0e
commit 70028f8445
4 changed files with 48 additions and 8 deletions
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1
repos/base-nova/include/nova/syscall-generic.h
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@@ -91,6 +91,7 @@ namespace Nova {
struct Mem_desc
{
enum Type {
HYPERVISOR_LOG = -6,
FRAMEBUFFER = -5,
ACPI_XSDT = -4,
ACPI_RSDT = -3,

16
repos/base-nova/src/core/platform.cc
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@@ -527,6 +527,9 @@ Platform::Platform() :
ram_alloc()->add_range(base, size);
}
uint64_t hyp_log = 0;
uint64_t hyp_log_size = 0;
/*
* Exclude all non-available memory from physical allocator AFTER all
* available RAM was added - otherwise the non-available memory gets not
@@ -536,6 +539,14 @@ Platform::Platform() :
for (unsigned i = 0; i < num_mem_desc; i++, mem_desc++) {
if (mem_desc->type == Hip::Mem_desc::AVAILABLE_MEMORY) continue;
if (verbose_boot_info)
log("detected res memory: ", Hex(mem_desc->addr), " - size: ",
Hex(mem_desc->size), " type=", (int)mem_desc->type);
if (mem_desc->type == Hip::Mem_desc::HYPERVISOR_LOG) {
hyp_log = mem_desc->addr;
hyp_log_size = mem_desc->size;
}
/* skip regions above 4G on 32 bit, no op on 64 bit */
if (mem_desc->addr > ~0UL) continue;
@@ -711,6 +722,11 @@ Platform::Platform() :
init_core_log( Core_log_range { core_local_addr, log_size } );
}
/* export hypervisor log memory */
if (hyp_log && hyp_log_size)
_rom_fs.insert(new (core_mem_alloc()) Rom_module(hyp_log, hyp_log_size,
"kernel_log"));
/* I/O port allocator (only meaningful for x86) */
_io_port_alloc.add_range(0, 0x10000);