powerpc: Remove core support for 40x

Now that 40x platforms have gone, remove support
for 40x in the core of powerpc arch.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240628121201.130802-4-mpe@ellerman.id.au

arch/powerpc/include/asm/cputable.h

@@ -353,7 +353,6 @@ static inline void cpu_feature_keys_init(void) { }
 	    CPU_FTR_COMMON | CPU_FTR_FPU_UNAVAILABLE  | CPU_FTR_NOEXECUTE)
 #define CPU_FTRS_CLASSIC32	(CPU_FTR_COMMON)
 #define CPU_FTRS_8XX	(CPU_FTR_NOEXECUTE)
-#define CPU_FTRS_40X	(CPU_FTR_NOEXECUTE)
 #define CPU_FTRS_44X	(CPU_FTR_NOEXECUTE)
 #define CPU_FTRS_440x6	(CPU_FTR_NOEXECUTE | \
 	    CPU_FTR_INDEXED_DCR)
@@ -507,9 +506,6 @@ enum {
 #ifdef CONFIG_PPC_8xx
 	    CPU_FTRS_8XX |
 #endif
-#ifdef CONFIG_40x
-	    CPU_FTRS_40X |
-#endif
 #ifdef CONFIG_PPC_47x
 	    CPU_FTRS_47X | CPU_FTR_476_DD2 |
 #elif defined(CONFIG_44x)
@@ -582,9 +578,6 @@ enum {
 #ifdef CONFIG_PPC_8xx
 	    CPU_FTRS_8XX &
 #endif
-#ifdef CONFIG_40x
-	    CPU_FTRS_40X &
-#endif
 #ifdef CONFIG_PPC_47x
 	    CPU_FTRS_47X &
 #elif defined(CONFIG_44x)

arch/powerpc/include/asm/mmu.h

@@ -16,7 +16,6 @@
  */
 #define MMU_FTR_HPTE_TABLE		ASM_CONST(0x00000001)
 #define MMU_FTR_TYPE_8xx		ASM_CONST(0x00000002)
-#define MMU_FTR_TYPE_40x		ASM_CONST(0x00000004)
 #define MMU_FTR_TYPE_44x		ASM_CONST(0x00000008)
 #define MMU_FTR_TYPE_FSL_E		ASM_CONST(0x00000010)
 #define MMU_FTR_TYPE_47x		ASM_CONST(0x00000020)
@@ -153,9 +152,6 @@ enum {
 #ifdef CONFIG_PPC_8xx
 		MMU_FTR_TYPE_8xx |
 #endif
-#ifdef CONFIG_40x
-		MMU_FTR_TYPE_40x |
-#endif
 #ifdef CONFIG_PPC_47x
 		MMU_FTR_TYPE_47x | MMU_FTR_USE_TLBIVAX_BCAST | MMU_FTR_LOCK_BCAST_INVAL |
 #elif defined(CONFIG_44x)
@@ -202,9 +198,6 @@ enum {
 #ifdef CONFIG_PPC_8xx
 #define MMU_FTRS_ALWAYS		MMU_FTR_TYPE_8xx
 #endif
-#ifdef CONFIG_40x
-#define MMU_FTRS_ALWAYS		MMU_FTR_TYPE_40x
-#endif
 #ifdef CONFIG_PPC_47x
 #define MMU_FTRS_ALWAYS		MMU_FTR_TYPE_47x
 #elif defined(CONFIG_44x)

arch/powerpc/include/asm/nohash/32/pgtable.h

@@ -118,9 +118,7 @@
  * (hardware-defined) PowerPC PTE as closely as possible.
  */
 
-#if defined(CONFIG_40x)
-#include <asm/nohash/32/pte-40x.h>
-#elif defined(CONFIG_44x)
+#if defined(CONFIG_44x)
 #include <asm/nohash/32/pte-44x.h>
 #elif defined(CONFIG_PPC_85xx) && defined(CONFIG_PTE_64BIT)
 #include <asm/nohash/pte-e500.h>

arch/powerpc/include/asm/nohash/mmu.h

@@ -2,10 +2,7 @@
 #ifndef _ASM_POWERPC_NOHASH_MMU_H_
 #define _ASM_POWERPC_NOHASH_MMU_H_
 
-#if defined(CONFIG_40x)
-/* 40x-style software loaded TLB */
-#include <asm/nohash/32/mmu-40x.h>
-#elif defined(CONFIG_44x)
+#if defined(CONFIG_44x)
 /* 44x-style software loaded TLB */
 #include <asm/nohash/32/mmu-44x.h>
 #elif defined(CONFIG_PPC_E500)

arch/powerpc/include/asm/reg.h

@@ -233,14 +233,10 @@
 
 /* Special Purpose Registers (SPRNs)*/
 
-#ifdef CONFIG_40x
-#define SPRN_PID	0x3B1	/* Process ID */
-#else
 #define SPRN_PID	0x030	/* Process ID */
 #ifdef CONFIG_BOOKE
 #define SPRN_PID0	SPRN_PID/* Process ID Register 0 */
 #endif
-#endif
 
 #define SPRN_CTR	0x009	/* Count Register */
 #define SPRN_DSCR	0x11
@@ -527,7 +523,7 @@
 #define SPRN_TSCR	0x399	/* Thread Switch Control Register */
 
 #define SPRN_DEC	0x016		/* Decrement Register */
-#define SPRN_PIT	0x3DB		/* Programmable Interval Timer (40x/BOOKE) */
+#define SPRN_PIT	0x3DB		/* Programmable Interval Timer (BOOKE) */
 
 #define SPRN_DER	0x095		/* Debug Enable Register */
 #define DER_RSTE	0x40000000	/* Reset Interrupt */
@@ -1116,15 +1112,6 @@
  *	- SPRG2 indicator that we are in RTAS
  *	- SPRG4 (603 only) pseudo TLB LRU data
  *
- * 32-bit 40x:
- *	- SPRG0 scratch for exception vectors
- *	- SPRG1 scratch for exception vectors
- *	- SPRG2 scratch for exception vectors
- *	- SPRG4 scratch for exception vectors (not 403)
- *	- SPRG5 scratch for exception vectors (not 403)
- *	- SPRG6 scratch for exception vectors (not 403)
- *	- SPRG7 scratch for exception vectors (not 403)
- *
  * 32-bit 440 and FSL BookE:
  *	- SPRG0 scratch for exception vectors
  *	- SPRG1 scratch for exception vectors (*)
@@ -1216,16 +1203,6 @@
 #define SPRN_SPRG_603_LRU	SPRN_SPRG4
 #endif
 
-#ifdef CONFIG_40x
-#define SPRN_SPRG_SCRATCH0	SPRN_SPRG0
-#define SPRN_SPRG_SCRATCH1	SPRN_SPRG1
-#define SPRN_SPRG_SCRATCH2	SPRN_SPRG2
-#define SPRN_SPRG_SCRATCH3	SPRN_SPRG4
-#define SPRN_SPRG_SCRATCH4	SPRN_SPRG5
-#define SPRN_SPRG_SCRATCH5	SPRN_SPRG6
-#define SPRN_SPRG_SCRATCH6	SPRN_SPRG7
-#endif
-
 #ifdef CONFIG_BOOKE
 #define SPRN_SPRG_RSCRATCH0	SPRN_SPRG0
 #define SPRN_SPRG_WSCRATCH0	SPRN_SPRG0