1 files changed, 44 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h b/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h
new file mode 100644
index 000000000000..a46616937d20
--- /dev/null
+++ b/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H
+#define _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H
+
+#define PAGE_SHIFT_8M		23
+
+static inline pte_t *hugepd_page(hugepd_t hpd)
+{
+	BUG_ON(!hugepd_ok(hpd));
+
+	return (pte_t *)__va(hpd_val(hpd) & ~HUGEPD_SHIFT_MASK);
+}
+
+static inline unsigned int hugepd_shift(hugepd_t hpd)
+{
+	return ((hpd_val(hpd) & _PMD_PAGE_MASK) >> 1) + 17;
+}
+
+static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
+				    unsigned int pdshift)
+{
+	unsigned long idx = (addr & ((1UL << pdshift) - 1)) >> PAGE_SHIFT;
+
+	return hugepd_page(hpd) + idx;
+}
+
+static inline void flush_hugetlb_page(struct vm_area_struct *vma,
+				      unsigned long vmaddr)
+{
+	flush_tlb_page(vma, vmaddr);
+}
+
+static inline void hugepd_populate(hugepd_t *hpdp, pte_t *new, unsigned int pshift)
+{
+	*hpdp = __hugepd(__pa(new) | _PMD_USER | _PMD_PRESENT |
+			 (pshift == PAGE_SHIFT_8M ? _PMD_PAGE_8M : _PMD_PAGE_512K));
+}
+
+static inline int check_and_get_huge_psize(int shift)
+{
+	return shift_to_mmu_psize(shift);
+}
+
+#endif /* _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H */