diff options
| -rw-r--r-- | target/linux/linux-2.4/patches/006-bcm47xx_workarounds.patch | 108 | ||||
| -rw-r--r-- | target/linux/linux-2.4/patches/007-bcm94710_mmu.patch | 147 |
2 files changed, 255 insertions, 0 deletions
diff --git a/target/linux/linux-2.4/patches/006-bcm47xx_workarounds.patch b/target/linux/linux-2.4/patches/006-bcm47xx_workarounds.patch new file mode 100644 index 0000000000..6e52e9c725 --- /dev/null +++ b/target/linux/linux-2.4/patches/006-bcm47xx_workarounds.patch @@ -0,0 +1,108 @@ +diff -urN linux.old/arch/mips/mm/tlbex-mips32.S linux.dev/arch/mips/mm/tlbex-mips32.S +--- linux.old/arch/mips/mm/tlbex-mips32.S 2005-05-28 17:42:03.000000000 +0200 ++++ linux.dev/arch/mips/mm/tlbex-mips32.S 2005-05-28 21:48:55.000000000 +0200 +@@ -90,6 +90,9 @@ + .set noat + LEAF(except_vec0_r4000) + .set mips3 ++#ifdef CONFIG_BCM4704 ++ nop ++#endif + #ifdef CONFIG_SMP + mfc0 k1, CP0_CONTEXT + la k0, pgd_current +diff -urN linux.old/arch/mips/mm/pg-r4k.c linux.dev/arch/mips/mm/pg-r4k.c +--- linux.old/arch/mips/mm/pg-r4k.c 2005-01-19 15:09:29.000000000 +0100 ++++ linux.dev/arch/mips/mm/pg-r4k.c 2005-05-28 21:57:52.000000000 +0200 +@@ -180,6 +180,7 @@ + + static inline void build_cdex_s(void) + { ++#if !defined(CONFIG_BCM4704) && !defined(CONFIG_BCM4710) + union mips_instruction mi; + + if ((store_offset & (cpu_scache_line_size() - 1))) +@@ -192,10 +193,12 @@ + mi.c_format.simmediate = store_offset; + + emit_instruction(mi); ++#endif + } + + static inline void build_cdex_p(void) + { ++#if !defined(CONFIG_BCM4704) && !defined(CONFIG_BCM4710) + union mips_instruction mi; + + if (store_offset & (cpu_dcache_line_size() - 1)) +@@ -218,6 +221,7 @@ + mi.c_format.simmediate = store_offset; + + emit_instruction(mi); ++#endif + } + + static void __build_store_reg(int reg) +diff -urN linux.old/include/asm-mips/stackframe.h linux.dev/include/asm-mips/stackframe.h +--- linux.old/include/asm-mips/stackframe.h 2002-11-29 00:53:15.000000000 +0100 ++++ linux.dev/include/asm-mips/stackframe.h 2005-05-28 21:53:03.000000000 +0200 +@@ -172,6 +172,46 @@ + rfe; \ + .set pop + ++#elif defined(CONFIG_BCM4710) || defined(CONFIG_BCM4704) ++ ++#define RESTORE_SOME \ ++ .set push; \ ++ .set reorder; \ ++ mfc0 t0, CP0_STATUS; \ ++ .set pop; \ ++ ori t0, 0x1f; \ ++ xori t0, 0x1f; \ ++ mtc0 t0, CP0_STATUS; \ ++ li v1, 0xff00; \ ++ and t0, v1; \ ++ lw v0, PT_STATUS(sp); \ ++ nor v1, $0, v1; \ ++ and v0, v1; \ ++ or v0, t0; \ ++ ori v1, v0, ST0_IE; \ ++ xori v1, v1, ST0_IE; \ ++ mtc0 v1, CP0_STATUS; \ ++ mtc0 v0, CP0_STATUS; \ ++ lw v1, PT_EPC(sp); \ ++ mtc0 v1, CP0_EPC; \ ++ lw $31, PT_R31(sp); \ ++ lw $28, PT_R28(sp); \ ++ lw $25, PT_R25(sp); \ ++ lw $7, PT_R7(sp); \ ++ lw $6, PT_R6(sp); \ ++ lw $5, PT_R5(sp); \ ++ lw $4, PT_R4(sp); \ ++ lw $3, PT_R3(sp); \ ++ lw $2, PT_R2(sp) ++ ++#define RESTORE_SP_AND_RET \ ++ lw sp, PT_R29(sp); \ ++ nop; \ ++ nop; \ ++ .set mips3; \ ++ eret; \ ++ .set mips0 ++ + #else + + #define RESTORE_SOME \ +diff -urN linux.old/arch/mips/mm/tlbex-r4k.S linux.dev/arch/mips/mm/tlbex-r4k.S +--- linux.old/arch/mips/mm/tlbex-r4k.S 2005-05-28 17:42:03.000000000 +0200 ++++ linux.dev/arch/mips/mm/tlbex-r4k.S 2005-05-29 15:04:43.000000000 +0200 +@@ -168,6 +168,9 @@ + .set noat + LEAF(except_vec0_r4000) + .set mips3 ++#ifdef CONFIG_BCM4704 ++ nop ++#endif + GET_PGD(k0, k1) # get pgd pointer + mfc0 k0, CP0_BADVADDR # Get faulting address + srl k0, k0, _PGDIR_SHIFT # get pgd only bits diff --git a/target/linux/linux-2.4/patches/007-bcm94710_mmu.patch b/target/linux/linux-2.4/patches/007-bcm94710_mmu.patch new file mode 100644 index 0000000000..9fd0162ed0 --- /dev/null +++ b/target/linux/linux-2.4/patches/007-bcm94710_mmu.patch @@ -0,0 +1,147 @@ +diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c +--- linux.old/arch/mips/mm/c-r4k.c 2005-05-28 17:42:06.000000000 +0200 ++++ linux.dev/arch/mips/mm/c-r4k.c 2005-05-29 18:26:34.000000000 +0200 +@@ -14,6 +14,12 @@ + #include <linux/mm.h> + #include <linux/bitops.h> + ++#ifdef CONFIG_BCM4710 ++#include "../bcm947xx/include/typedefs.h" ++#include "../bcm947xx/include/sbconfig.h" ++#include <asm/paccess.h> ++#endif ++ + #include <asm/bcache.h> + #include <asm/bootinfo.h> + #include <asm/cacheops.h> +@@ -390,6 +396,11 @@ + addr = start & ~(dc_lsize - 1); + aend = (end - 1) & ~(dc_lsize - 1); + ++#ifdef CONFIG_BCM4710 ++ BCM4710_FILL_TLB(addr); ++ BCM4710_FILL_TLB(aend); ++#endif ++ + while (1) { + /* Hit_Writeback_Inv_D */ + protected_writeback_dcache_line(addr); +@@ -509,6 +520,10 @@ + R4600_HIT_CACHEOP_WAR_IMPL; + a = addr & ~(dc_lsize - 1); + end = (addr + size - 1) & ~(dc_lsize - 1); ++#ifdef CONFIG_BCM4710 ++ BCM4710_FILL_TLB(a); ++ BCM4710_FILL_TLB(end); ++#endif + while (1) { + flush_dcache_line(a); /* Hit_Writeback_Inv_D */ + if (a == end) +@@ -576,6 +591,10 @@ + unsigned long ic_lsize = current_cpu_data.icache.linesz; + unsigned long dc_lsize = current_cpu_data.dcache.linesz; + ++#ifdef CONFIG_BCM4710 ++ BCM4710_PROTECTED_FILL_TLB(addr); ++ BCM4710_PROTECTED_FILL_TLB(addr + 4); ++#endif + R4600_HIT_CACHEOP_WAR_IMPL; + protected_writeback_dcache_line(addr & ~(dc_lsize - 1)); + protected_flush_icache_line(addr & ~(ic_lsize - 1)); +diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kcache.h +--- linux.old/include/asm-mips/r4kcache.h 2005-05-28 17:42:06.000000000 +0200 ++++ linux.dev/include/asm-mips/r4kcache.h 2005-05-29 18:34:46.000000000 +0200 +@@ -15,6 +15,25 @@ + #include <asm/asm.h> + #include <asm/cacheops.h> + ++#ifdef CONFIG_BCM4710 ++#define BCM4710_DUMMY_RREG() (((sbconfig_t *)(KSEG1ADDR(SB_ENUM_BASE + SBCONFIGOFF)))->sbimstate) ++ ++#define BCM4710_FILL_TLB(addr) (*(volatile unsigned long *)(addr)) ++#define BCM4710_PROTECTED_FILL_TLB(addr) ({ unsigned long x; get_dbe(x, (volatile unsigned long *)(addr)); }) ++ ++#define cache_op(op,addr) \ ++ BCM4710_DUMMY_RREG(); \ ++ __asm__ __volatile__( \ ++ " .set noreorder \n" \ ++ " .set mips3\n\t \n" \ ++ " cache %0, %1 \n" \ ++ " .set mips0 \n" \ ++ " .set reorder" \ ++ : \ ++ : "i" (op), "m" (*(unsigned char *)(addr))) ++ ++#else ++ + #define cache_op(op,addr) \ + __asm__ __volatile__( \ + " .set noreorder \n" \ +@@ -24,6 +43,8 @@ + " .set reorder" \ + : \ + : "i" (op), "m" (*(unsigned char *)(addr))) ++#endif ++ + + static inline void flush_icache_line_indexed(unsigned long addr) + { +@@ -47,6 +68,10 @@ + + static inline void flush_dcache_line(unsigned long addr) + { ++ ++#ifdef CONFIG_BCM4710 ++ BCM4710_DUMMY_RREG(); ++#endif + cache_op(Hit_Writeback_Inv_D, addr); + } + +@@ -196,7 +221,13 @@ + unsigned long start = page; + unsigned long end = start + PAGE_SIZE; + ++#ifdef CONFIG_BCM4710 ++ BCM4710_FILL_TLB(start); ++#endif + do { ++#ifdef CONFIG_BCM4710 ++ BCM4710_DUMMY_RREG(); ++#endif + cache16_unroll32(start,Hit_Invalidate_I); + start += 0x200; + } while (start < end); +@@ -291,8 +322,12 @@ + unsigned long ws, addr; + + for (ws = 0; ws < ws_end; ws += ws_inc) +- for (addr = start; addr < end; addr += 0x400) ++ for (addr = start; addr < end; addr += 0x400) { ++#ifdef CONFIG_BCM4710 ++ BCM4710_DUMMY_RREG(); ++#endif + cache32_unroll32(addr|ws,Index_Writeback_Inv_D); ++ } + } + + static inline void blast_dcache32_page(unsigned long page) +@@ -300,6 +335,9 @@ + unsigned long start = page; + unsigned long end = start + PAGE_SIZE; + ++#ifdef CONFIG_BCM4710 ++ __asm__ __volatile__("nop;nop;nop;nop"); ++#endif + do { + cache32_unroll32(start,Hit_Writeback_Inv_D); + start += 0x400; +@@ -339,6 +377,9 @@ + unsigned long start = page; + unsigned long end = start + PAGE_SIZE; + ++#ifdef CONFIG_BCM4710 ++ BCM4710_FILL_TLB(start); ++#endif + do { + cache32_unroll32(start,Hit_Invalidate_I); + start += 0x400; |