powerpc/ps3: Add ps3_mm_set_repository_highmem
Add the new routine ps3_mm_set_repository_highmem() that saves highmem info to the LV1 hypervisor registry so that the info will be available to second stage OS's loaded by petitboot/kexec. FreeBSD and some Linux derivatives use this feature. Also, move the existing ps3_mm_get_repository_highmem() routine up in the source file. This implementation of ps3_mm_set_repository_highmem() assumes the repository will have a single highmem region entry (at index 0). Signed-off-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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@ -223,6 +223,44 @@ void ps3_mm_vas_destroy(void)
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}
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}
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}
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}
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static int ps3_mm_get_repository_highmem(struct mem_region *r)
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{
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int result;
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/* Assume a single highmem region. */
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result = ps3_repository_read_highmem_info(0, &r->base, &r->size);
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if (result)
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goto zero_region;
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if (!r->base || !r->size) {
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result = -1;
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goto zero_region;
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}
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r->offset = r->base - map.rm.size;
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DBG("%s:%d: Found high region in repository: %llxh %llxh\n",
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__func__, __LINE__, r->base, r->size);
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return 0;
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zero_region:
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DBG("%s:%d: No high region in repository.\n", __func__, __LINE__);
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r->size = r->base = r->offset = 0;
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return result;
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}
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static int ps3_mm_set_repository_highmem(const struct mem_region *r)
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{
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/* Assume a single highmem region. */
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return r ? ps3_repository_write_highmem_info(0, r->base, r->size) :
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ps3_repository_write_highmem_info(0, 0, 0);
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}
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/**
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/**
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* ps3_mm_region_create - create a memory region in the vas
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* ps3_mm_region_create - create a memory region in the vas
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* @r: pointer to a struct mem_region to accept initialized values
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* @r: pointer to a struct mem_region to accept initialized values
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@ -293,36 +331,6 @@ static void ps3_mm_region_destroy(struct mem_region *r)
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}
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}
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}
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}
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static int ps3_mm_get_repository_highmem(struct mem_region *r)
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{
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int result;
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/* Assume a single highmem region. */
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result = ps3_repository_read_highmem_info(0, &r->base, &r->size);
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if (result)
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goto zero_region;
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if (!r->base || !r->size) {
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result = -1;
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goto zero_region;
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}
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r->offset = r->base - map.rm.size;
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DBG("%s:%d: Found high region in repository: %llxh %llxh\n",
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__func__, __LINE__, r->base, r->size);
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return 0;
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zero_region:
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DBG("%s:%d: No high region in repository.\n", __func__, __LINE__);
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r->size = r->base = r->offset = 0;
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return result;
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}
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/*============================================================================*/
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/*============================================================================*/
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/* dma routines */
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/* dma routines */
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/*============================================================================*/
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/*============================================================================*/
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