add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/arch/powerpc/include/asm/book3s/32/mmu-hash.h
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@@ -1,6 +1,7 @@
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 /* SPDX-License-Identifier: GPL-2.0 */
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 #ifndef _ASM_POWERPC_BOOK3S_32_MMU_HASH_H_
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 #define _ASM_POWERPC_BOOK3S_32_MMU_HASH_H_
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+
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 /*
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  * 32-bit hash table MMU support
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  */
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@@ -34,8 +35,12 @@
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 #define BAT_PHYS_ADDR(x) ((u32)((x & 0x00000000fffe0000ULL) | \
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 				((x & 0x0000000e00000000ULL) >> 24) | \
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 				((x & 0x0000000100000000ULL) >> 30)))
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+#define PHYS_BAT_ADDR(x) (((u64)(x) & 0x00000000fffe0000ULL) | \
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+			  (((u64)(x) << 24) & 0x0000000e00000000ULL) | \
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+			  (((u64)(x) << 30) & 0x0000000100000000ULL))
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 #else
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 #define BAT_PHYS_ADDR(x) (x)
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+#define PHYS_BAT_ADDR(x) ((x) & 0xfffe0000)
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 #endif
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 struct ppc_bat {
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@@ -53,6 +58,11 @@
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 #define PP_RWRX 1	/* Supervisor read/write, User read */
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 #define PP_RWRW 2	/* Supervisor read/write, User read/write */
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 #define PP_RXRX 3	/* Supervisor read,       User read */
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+
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+/* Values for Segment Registers */
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+#define SR_NX	0x10000000	/* No Execute */
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+#define SR_KP	0x20000000	/* User key */
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+#define SR_KS	0x40000000	/* Supervisor key */
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 #ifndef __ASSEMBLY__
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@@ -83,6 +93,17 @@
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 	unsigned long vdso_base;
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 } mm_context_t;
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+void update_bats(void);
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+static inline void cleanup_cpu_mmu_context(void) { };
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+
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+/* patch sites */
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+extern s32 patch__hash_page_A0, patch__hash_page_A1, patch__hash_page_A2;
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+extern s32 patch__hash_page_B, patch__hash_page_C;
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+extern s32 patch__flush_hash_A0, patch__flush_hash_A1, patch__flush_hash_A2;
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+extern s32 patch__flush_hash_B;
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+
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+int __init find_free_bat(void);
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+unsigned int bat_block_size(unsigned long base, unsigned long top);
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 #endif /* !__ASSEMBLY__ */
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 /* We happily ignore the smaller BATs on 601, we don't actually use