diff options
Diffstat (limited to 'package/uboot-lantiq/patches/020-mips-enhancements.patch')
| -rw-r--r-- | package/uboot-lantiq/patches/020-mips-enhancements.patch | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/package/uboot-lantiq/patches/020-mips-enhancements.patch b/package/uboot-lantiq/patches/020-mips-enhancements.patch new file mode 100644 index 000000000..d05646770 --- /dev/null +++ b/package/uboot-lantiq/patches/020-mips-enhancements.patch @@ -0,0 +1,124 @@ +--- a/cpu/mips/start.S ++++ b/cpu/mips/start.S +@@ -69,6 +69,9 @@ _start: + #elif defined(CONFIG_PURPLE) + .word INFINEON_EBU_BOOTCFG /* EBU init code, fetched during booting */ + .word INFINEON_EBU_BOOTCFG /* EBU init code, fetched during booting */ ++#elif defined(CONFIG_SYS_EBU_BOOT) ++ .word INFINEON_EBU_BOOTCFG /* EBU init code, fetched during booting */ ++ .word 0x00000000 /* phase of the flash */ + #else + RVECENT(romReserved,2) + #endif +@@ -202,7 +205,25 @@ _start: + * 128 * 8 == 1024 == 0x400 + * so this is address R_VEC+0x400 == 0xbfc00400 + */ +-#ifdef CONFIG_PURPLE ++#ifndef CONFIG_PURPLE ++ XVECENT(romExcHandle,0x400); /* bfc00400: Int, CauseIV=1 */ ++ RVECENT(romReserved,129); ++ RVECENT(romReserved,130); ++ RVECENT(romReserved,131); ++ RVECENT(romReserved,132); ++ RVECENT(romReserved,133); ++ RVECENT(romReserved,134); ++ RVECENT(romReserved,135); ++ RVECENT(romReserved,136); ++ RVECENT(romReserved,137); ++ RVECENT(romReserved,138); ++ RVECENT(romReserved,139); ++ RVECENT(romReserved,140); ++ RVECENT(romReserved,141); ++ RVECENT(romReserved,142); ++ RVECENT(romReserved,143); ++ XVECENT(romExcHandle,0x480); /* bfc00480: EJTAG debug exception */ ++#else /* CONFIG_PURPLE */ + /* 0xbfc00400 */ + .word 0xdc870000 + .word 0xfca70000 +@@ -228,6 +249,12 @@ _start: + #endif /* CONFIG_PURPLE */ + .align 4 + reset: ++#ifdef CONFIG_SYS_MIPS_MULTI_CPU ++ mfc0 k0, CP0_EBASE ++ and k0, EBASEF_CPUNUM ++ bne k0, zero, ifx_mips_handler_cpux ++ nop ++#endif + + /* Clear watch registers. + */ +@@ -239,6 +266,16 @@ reset: + + setup_c0_status_reset + ++#if defined(CONFIG_MIPS24KEC) || defined(CONFIG_MIPS34KC) ++ /* CONFIG7 register */ ++ /* Erratum "RPS May Cause Incorrect Instruction Execution" ++ * for 24KEC and 34KC */ ++ mfc0 k0, CP0_CONFIG, 7 ++ li k1, MIPS_CONF7_RPS ++ or k0, k1 ++ mtc0 k0, CP0_CONFIG, 7 ++#endif ++ + /* Init Timer */ + mtc0 zero, CP0_COUNT + mtc0 zero, CP0_COMPARE +@@ -270,9 +307,12 @@ reset: + jalr t9 + nop + ++#ifndef CONFIG_SYS_MIPS_CACHE_OPER_MODE ++#define CONFIG_SYS_MIPS_CACHE_OPER_MODE CONF_CM_CACHABLE_NONCOHERENT ++#endif + /* ... and enable them. + */ +- li t0, CONF_CM_CACHABLE_NONCOHERENT ++ li t0, CONFIG_SYS_MIPS_CACHE_OPER_MODE + mtc0 t0, CP0_CONFIG + #endif /* !CONFIG_SKIP_LOWLEVEL_INIT */ + +@@ -419,3 +459,15 @@ romReserved: + + romExcHandle: + b romExcHandle ++ ++ /* Additional handlers. ++ */ ++#ifdef CONFIG_SYS_MIPS_MULTI_CPU ++/* ++ * Stop Slave CPUs ++ */ ++ifx_mips_handler_cpux: ++ wait; ++ b ifx_mips_handler_cpux; ++ nop; ++#endif +--- a/include/asm-mips/mipsregs.h ++++ b/include/asm-mips/mipsregs.h +@@ -57,6 +57,7 @@ + #define CP0_CAUSE $13 + #define CP0_EPC $14 + #define CP0_PRID $15 ++#define CP0_EBASE $15,1 + #define CP0_CONFIG $16 + #define CP0_LLADDR $17 + #define CP0_WATCHLO $18 +@@ -395,6 +396,14 @@ + #define CAUSEF_BD (_ULCAST_(1) << 31) + + /* ++ * Bits in the coprocessor 0 EBase register ++ */ ++#define EBASEB_CPUNUM 0 ++#define EBASEF_CPUNUM (0x3ff << EBASEB_CPUNUM) ++#define EBASEB_EXPBASE 12 ++#define EBASEF_EXPBASE (0x3ffff << EBASEB_EXPBASE) ++ ++/* + * Bits in the coprocessor 0 config register. + */ + /* Generic bits. */ |