/**
* \brief Map init user-space memory.
*
* This function maps pages of the init user-space module. It expects
* the virtual base address 'vbase' of a program segment of the init executable,
* its size 'size' and its ELF64 access control flags. It maps pages
* into physical memory that is allocated on the fly and puts
* corresponding frame caps into init's segcn.
*
* \param vbase Virtual base address of program segment.
* \param size Size of program segment in bytes.
* \param flags ELF64 access control flags of program segment.
* \param ret Used to return base region pointer
*/
errval_t startup_alloc_init(void *state, genvaddr_t gvbase, size_t size,
uint32_t flags, void **ret)
{
errval_t err;
struct spawn_state *spawn_state = state;
lvaddr_t vbase = (lvaddr_t)gvbase; /* XXX */
lvaddr_t offset = BASE_PAGE_OFFSET(vbase);
/* Page align the parameters */
paging_align(&vbase, NULL, &size, BASE_PAGE_SIZE);
lpaddr_t pbase = 0, paddr = 0;
for(lvaddr_t i = vbase; i < vbase + size; i += BASE_PAGE_SIZE) {
if (apic_is_bsp()) {
paddr = bsp_alloc_phys(BASE_PAGE_SIZE);
} else {
paddr = app_alloc_phys(BASE_PAGE_SIZE);
}
if(pbase == 0) {
pbase = paddr;
}
err = startup_map_init(i, paddr, BASE_PAGE_SIZE, flags);
assert(err_is_ok(err));
}
if (apic_is_bsp()) {
// Create frame caps for segcn
paddr += BASE_PAGE_SIZE;
debug(SUBSYS_STARTUP,
"Allocated physical memory [0x%"PRIxLPADDR", 0x%"PRIxLPADDR"]\n",
pbase, paddr - pbase);
err = create_caps_to_cnode(pbase, paddr - pbase,
RegionType_RootTask, spawn_state, bootinfo);
if (err_is_fail(err)) {
return err;
}
}
assert(ret != NULL);
*ret = (void *)(vbase + offset);
return SYS_ERR_OK;
}
static lpaddr_t app_alloc_phys_aligned(size_t size, size_t align)
{
app_alloc_phys_start = round_up(app_alloc_phys_start, align);
return app_alloc_phys(size);
}