The exact same routine will be used in PowerNV. Signed-off-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/*
|
|
* QEMU PowerPC helper routines for the device tree.
|
|
*
|
|
* Copyright (C) 2016 IBM Corp.
|
|
*
|
|
* This code is licensed under the GPL version 2 or later. See the
|
|
* COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qapi/error.h"
|
|
#include "target-ppc/cpu.h"
|
|
|
|
#include "hw/ppc/fdt.h"
|
|
|
|
#if defined(TARGET_PPC64)
|
|
size_t ppc_create_page_sizes_prop(CPUPPCState *env, uint32_t *prop,
|
|
size_t maxsize)
|
|
{
|
|
size_t maxcells = maxsize / sizeof(uint32_t);
|
|
int i, j, count;
|
|
uint32_t *p = prop;
|
|
|
|
for (i = 0; i < PPC_PAGE_SIZES_MAX_SZ; i++) {
|
|
struct ppc_one_seg_page_size *sps = &env->sps.sps[i];
|
|
|
|
if (!sps->page_shift) {
|
|
break;
|
|
}
|
|
for (count = 0; count < PPC_PAGE_SIZES_MAX_SZ; count++) {
|
|
if (sps->enc[count].page_shift == 0) {
|
|
break;
|
|
}
|
|
}
|
|
if ((p - prop) >= (maxcells - 3 - count * 2)) {
|
|
break;
|
|
}
|
|
*(p++) = cpu_to_be32(sps->page_shift);
|
|
*(p++) = cpu_to_be32(sps->slb_enc);
|
|
*(p++) = cpu_to_be32(count);
|
|
for (j = 0; j < count; j++) {
|
|
*(p++) = cpu_to_be32(sps->enc[j].page_shift);
|
|
*(p++) = cpu_to_be32(sps->enc[j].pte_enc);
|
|
}
|
|
}
|
|
|
|
return (p - prop) * sizeof(uint32_t);
|
|
}
|
|
#endif
|