powerpc: remove 4xx support

There was for long time no activity in the 4xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 4xx,
so remove it.

Signed-off-by: Heiko Schocher <hs@denx.de>

1 files changed, 0 insertions, 336 deletions

diff --git a/arch/powerpc/cpu/ppc4xx/tlb.c b/arch/powerpc/cpu/ppc4xx/tlb.c
deleted file mode 100644
index 3cb09bd..0000000
--- a/arch/powerpc/cpu/ppc4xx/tlb.c
+++ /dev/null
@@ -1,336 +0,0 @@
-/*
- * (C) Copyright 2007
- * Stefan Roese, DENX Software Engineering, sr@denx.de.
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-
-#if defined(CONFIG_440)
-
-#include <asm/ppc440.h>
-#include <asm/cache.h>
-#include <asm/io.h>
-#include <asm/mmu.h>
-
-typedef struct region {
-	u64 base;
-	u32 size;
-	u32 tlb_word2_i_value;
-} region_t;
-
-void remove_tlb(u32 vaddr, u32 size)
-{
-	int i;
-	u32 tlb_word0_value;
-	u32 tlb_vaddr;
-	u32 tlb_size = 0;
-
-	for (i=0; i<PPC4XX_TLB_SIZE; i++) {
-		tlb_word0_value = mftlb1(i);
-		tlb_vaddr = TLB_WORD0_EPN_DECODE(tlb_word0_value);
-		if (((tlb_word0_value & TLB_WORD0_V_MASK) == TLB_WORD0_V_ENABLE) &&
-		    (tlb_vaddr >= vaddr)) {
-			/*
-			 * TLB is enabled and start address is lower or equal
-			 * than the area we are looking for. Now we only have
-			 * to check the size/end address for a match.
-			 */
-			switch (tlb_word0_value & TLB_WORD0_SIZE_MASK) {
-			case TLB_WORD0_SIZE_1KB:
-				tlb_size = 1 << 10;
-				break;
-			case TLB_WORD0_SIZE_4KB:
-				tlb_size = 4 << 10;
-				break;
-			case TLB_WORD0_SIZE_16KB:
-				tlb_size = 16 << 10;
-				break;
-			case TLB_WORD0_SIZE_64KB:
-				tlb_size = 64 << 10;
-				break;
-			case TLB_WORD0_SIZE_256KB:
-				tlb_size = 256 << 10;
-				break;
-			case TLB_WORD0_SIZE_1MB:
-				tlb_size = 1 << 20;
-				break;
-			case TLB_WORD0_SIZE_16MB:
-				tlb_size = 16 << 20;
-				break;
-			case TLB_WORD0_SIZE_256MB:
-				tlb_size = 256 << 20;
-				break;
-			}
-
-			/*
-			 * Now check the end-address if it's in the range
-			 */
-			if ((tlb_vaddr + tlb_size - 1) <= (vaddr + size - 1))
-				/*
-				 * Found a TLB in the range.
-				 * Disable it by writing 0 to tlb0 word.
-				 */
-				mttlb1(i, 0);
-		}
-	}
-
-	/* Execute an ISYNC instruction so that the new TLB entry takes effect */
-	asm("isync");
-}
-
-/*
- * Change the I attribute (cache inhibited) of a TLB or multiple TLB's.
- * This function is used to either turn cache on or off in a specific
- * memory area.
- */
-void change_tlb(u32 vaddr, u32 size, u32 tlb_word2_i_value)
-{
-	int i;
-	u32 tlb_word0_value;
-	u32 tlb_word2_value;
-	u32 tlb_vaddr;
-	u32 tlb_size = 0;
-
-	for (i=0; i<PPC4XX_TLB_SIZE; i++) {
-		tlb_word0_value = mftlb1(i);
-		tlb_vaddr = TLB_WORD0_EPN_DECODE(tlb_word0_value);
-		if (((tlb_word0_value & TLB_WORD0_V_MASK) == TLB_WORD0_V_ENABLE) &&
-		    (tlb_vaddr >= vaddr)) {
-			/*
-			 * TLB is enabled and start address is lower or equal
-			 * than the area we are looking for. Now we only have
-			 * to check the size/end address for a match.
-			 */
-			switch (tlb_word0_value & TLB_WORD0_SIZE_MASK) {
-			case TLB_WORD0_SIZE_1KB:
-				tlb_size = 1 << 10;
-				break;
-			case TLB_WORD0_SIZE_4KB:
-				tlb_size = 4 << 10;
-				break;
-			case TLB_WORD0_SIZE_16KB:
-				tlb_size = 16 << 10;
-				break;
-			case TLB_WORD0_SIZE_64KB:
-				tlb_size = 64 << 10;
-				break;
-			case TLB_WORD0_SIZE_256KB:
-				tlb_size = 256 << 10;
-				break;
-			case TLB_WORD0_SIZE_1MB:
-				tlb_size = 1 << 20;
-				break;
-			case TLB_WORD0_SIZE_16MB:
-				tlb_size = 16 << 20;
-				break;
-			case TLB_WORD0_SIZE_256MB:
-				tlb_size = 256 << 20;
-				break;
-			}
-
-			/*
-			 * Now check the end-address if it's in the range
-			 */
-			if (((tlb_vaddr + tlb_size - 1) <= (vaddr + size - 1)) ||
-			    ((tlb_vaddr < (vaddr + size - 1)) &&
-			     ((tlb_vaddr + tlb_size - 1) > (vaddr + size - 1)))) {
-				/*
-				 * Found a TLB in the range.
-				 * Change cache attribute in tlb2 word.
-				 */
-				tlb_word2_value =
-					TLB_WORD2_U0_DISABLE | TLB_WORD2_U1_DISABLE |
-					TLB_WORD2_U2_DISABLE | TLB_WORD2_U3_DISABLE |
-					TLB_WORD2_W_DISABLE | tlb_word2_i_value |
-					TLB_WORD2_M_DISABLE | TLB_WORD2_G_DISABLE |
-					TLB_WORD2_E_DISABLE | TLB_WORD2_UX_ENABLE |
-					TLB_WORD2_UW_ENABLE | TLB_WORD2_UR_ENABLE |
-					TLB_WORD2_SX_ENABLE | TLB_WORD2_SW_ENABLE |
-					TLB_WORD2_SR_ENABLE;
-
-				/*
-				 * Now either flush or invalidate the dcache
-				 */
-				if (tlb_word2_i_value)
-					flush_dcache();
-				else
-					invalidate_dcache();
-
-				mttlb3(i, tlb_word2_value);
-				asm("iccci 0,0");
-			}
-		}
-	}
-
-	/* Execute an ISYNC instruction so that the new TLB entry takes effect */
-	asm("isync");
-}
-
-static int add_tlb_entry(u64 phys_addr,
-			 u32 virt_addr,
-			 u32 tlb_word0_size_value,
-			 u32 tlb_word2_i_value)
-{
-	int i;
-	unsigned long tlb_word0_value;
-	unsigned long tlb_word1_value;
-	unsigned long tlb_word2_value;
-
-	/* First, find the index of a TLB entry not being used */
-	for (i=0; i<PPC4XX_TLB_SIZE; i++) {
-		tlb_word0_value = mftlb1(i);
-		if ((tlb_word0_value & TLB_WORD0_V_MASK) == TLB_WORD0_V_DISABLE)
-			break;
-	}
-	if (i >= PPC4XX_TLB_SIZE)
-		return -1;
-
-	/* Second, create the TLB entry */
-	tlb_word0_value = TLB_WORD0_EPN_ENCODE(virt_addr) | TLB_WORD0_V_ENABLE |
-		TLB_WORD0_TS_0 | tlb_word0_size_value;
-	tlb_word1_value = TLB_WORD1_RPN_ENCODE((u32)phys_addr) |
-		TLB_WORD1_ERPN_ENCODE(phys_addr >> 32);
-	tlb_word2_value = TLB_WORD2_U0_DISABLE | TLB_WORD2_U1_DISABLE |
-		TLB_WORD2_U2_DISABLE | TLB_WORD2_U3_DISABLE |
-		TLB_WORD2_W_DISABLE | tlb_word2_i_value |
-		TLB_WORD2_M_DISABLE | TLB_WORD2_G_DISABLE |
-		TLB_WORD2_E_DISABLE | TLB_WORD2_UX_ENABLE |
-		TLB_WORD2_UW_ENABLE | TLB_WORD2_UR_ENABLE |
-		TLB_WORD2_SX_ENABLE | TLB_WORD2_SW_ENABLE |
-		TLB_WORD2_SR_ENABLE;
-
-	/* Wait for all memory accesses to complete */
-	sync();
-
-	/* Third, add the TLB entries */
-	mttlb1(i, tlb_word0_value);
-	mttlb2(i, tlb_word1_value);
-	mttlb3(i, tlb_word2_value);
-
-	/* Execute an ISYNC instruction so that the new TLB entry takes effect */
-	asm("isync");
-
-	return 0;
-}
-
-static void program_tlb_addr(u64 phys_addr,
-			     u32 virt_addr,
-			     u32 mem_size,
-			     u32 tlb_word2_i_value)
-{
-	int rc;
-	int tlb_i;
-
-	tlb_i = tlb_word2_i_value;
-	while (mem_size != 0) {
-		rc = 0;
-		/* Add the TLB entries in to map the region. */
-		if (((phys_addr & TLB_256MB_ALIGN_MASK) == phys_addr) &&
-		    (mem_size >= TLB_256MB_SIZE)) {
-			/* Add a 256MB TLB entry */
-			if ((rc = add_tlb_entry(phys_addr, virt_addr,
-						TLB_WORD0_SIZE_256MB, tlb_i)) == 0) {
-				mem_size -= TLB_256MB_SIZE;
-				phys_addr += TLB_256MB_SIZE;
-				virt_addr += TLB_256MB_SIZE;
-			}
-		} else if (((phys_addr & TLB_16MB_ALIGN_MASK) == phys_addr) &&
-			   (mem_size >= TLB_16MB_SIZE)) {
-			/* Add a 16MB TLB entry */
-			if ((rc = add_tlb_entry(phys_addr, virt_addr,
-						TLB_WORD0_SIZE_16MB, tlb_i)) == 0) {
-				mem_size -= TLB_16MB_SIZE;
-				phys_addr += TLB_16MB_SIZE;
-				virt_addr += TLB_16MB_SIZE;
-			}
-		} else if (((phys_addr & TLB_1MB_ALIGN_MASK) == phys_addr) &&
-			   (mem_size >= TLB_1MB_SIZE)) {
-			/* Add a 1MB TLB entry */
-			if ((rc = add_tlb_entry(phys_addr, virt_addr,
-						TLB_WORD0_SIZE_1MB, tlb_i)) == 0) {
-				mem_size -= TLB_1MB_SIZE;
-				phys_addr += TLB_1MB_SIZE;
-				virt_addr += TLB_1MB_SIZE;
-			}
-		} else if (((phys_addr & TLB_256KB_ALIGN_MASK) == phys_addr) &&
-			   (mem_size >= TLB_256KB_SIZE)) {
-			/* Add a 256KB TLB entry */
-			if ((rc = add_tlb_entry(phys_addr, virt_addr,
-						TLB_WORD0_SIZE_256KB, tlb_i)) == 0) {
-				mem_size -= TLB_256KB_SIZE;
-				phys_addr += TLB_256KB_SIZE;
-				virt_addr += TLB_256KB_SIZE;
-			}
-		} else if (((phys_addr & TLB_64KB_ALIGN_MASK) == phys_addr) &&
-			   (mem_size >= TLB_64KB_SIZE)) {
-			/* Add a 64KB TLB entry */
-			if ((rc = add_tlb_entry(phys_addr, virt_addr,
-						TLB_WORD0_SIZE_64KB, tlb_i)) == 0) {
-				mem_size -= TLB_64KB_SIZE;
-				phys_addr += TLB_64KB_SIZE;
-				virt_addr += TLB_64KB_SIZE;
-			}
-		} else if (((phys_addr & TLB_16KB_ALIGN_MASK) == phys_addr) &&
-			   (mem_size >= TLB_16KB_SIZE)) {
-			/* Add a 16KB TLB entry */
-			if ((rc = add_tlb_entry(phys_addr, virt_addr,
-						TLB_WORD0_SIZE_16KB, tlb_i)) == 0) {
-				mem_size -= TLB_16KB_SIZE;
-				phys_addr += TLB_16KB_SIZE;
-				virt_addr += TLB_16KB_SIZE;
-			}
-		} else if (((phys_addr & TLB_4KB_ALIGN_MASK) == phys_addr) &&
-			   (mem_size >= TLB_4KB_SIZE)) {
-			/* Add a 4KB TLB entry */
-			if ((rc = add_tlb_entry(phys_addr, virt_addr,
-						TLB_WORD0_SIZE_4KB, tlb_i)) == 0) {
-				mem_size -= TLB_4KB_SIZE;
-				phys_addr += TLB_4KB_SIZE;
-				virt_addr += TLB_4KB_SIZE;
-			}
-		} else if (((phys_addr & TLB_1KB_ALIGN_MASK) == phys_addr) &&
-			   (mem_size >= TLB_1KB_SIZE)) {
-			/* Add a 1KB TLB entry */
-			if ((rc = add_tlb_entry(phys_addr, virt_addr,
-						TLB_WORD0_SIZE_1KB, tlb_i)) == 0) {
-				mem_size -= TLB_1KB_SIZE;
-				phys_addr += TLB_1KB_SIZE;
-				virt_addr += TLB_1KB_SIZE;
-			}
-		} else {
-			printf("ERROR: no TLB size exists for the base address 0x%llx.\n",
-				phys_addr);
-		}
-
-		if (rc != 0)
-			printf("ERROR: no TLB entries available for the base addr 0x%llx.\n",
-				phys_addr);
-	}
-
-	return;
-}
-
-/*
- * Program one (or multiple) TLB entries for one memory region
- *
- * Common usage for boards with SDRAM DIMM modules to dynamically
- * configure the TLB's for the SDRAM
- */
-void program_tlb(u64 phys_addr, u32 virt_addr, u32 size, u32 tlb_word2_i_value)
-{
-	region_t region_array;
-
-	region_array.base = phys_addr;
-	region_array.size = size;
-	region_array.tlb_word2_i_value = tlb_word2_i_value;	/* en-/disable cache */
-
-	/* Call the routine to add in the tlb entries for the memory regions */
-	program_tlb_addr(region_array.base, virt_addr, region_array.size,
-			 region_array.tlb_word2_i_value);
-
-	return;
-}
-
-#endif /* CONFIG_440 */