Support disabling of a core via user command 'cpu disable'.
Signed-off-by: Kumar Gala galak@kernel.crashing.org --- cpu/mpc86xx/mp.c | 18 ++++++++++++++++-- include/asm-ppc/immap_86xx.h | 33 ++++++++++++++++++--------------- 2 files changed, 34 insertions(+), 17 deletions(-)
diff --git a/cpu/mpc86xx/mp.c b/cpu/mpc86xx/mp.c index ecdf2fb..2c72752 100644 --- a/cpu/mpc86xx/mp.c +++ b/cpu/mpc86xx/mp.c @@ -48,8 +48,22 @@ int cpu_status(int nr)
int cpu_disable(int nr) { - /* dummy function so common/cmd_mp.c will build */ - return 1; + volatile immap_t *immap = (immap_t *) CONFIG_SYS_CCSRBAR; + volatile ccsr_gur_t *gur = &immap->im_gur; + + switch (nr) { + case 0: + setbits_be32(&gur->devdisr, MPC86xx_DEVDISR_CPU0); + break; + case 1: + setbits_be32(&gur->devdisr, MPC86xx_DEVDISR_CPU1); + break; + default: + printf("Invalid cpu number for disable %d\n", nr); + return 1; + } + + return 0; }
int cpu_release(int nr, int argc, char *argv[]) diff --git a/include/asm-ppc/immap_86xx.h b/include/asm-ppc/immap_86xx.h index 098f253..fd7acdb 100644 --- a/include/asm-ppc/immap_86xx.h +++ b/include/asm-ppc/immap_86xx.h @@ -1186,17 +1186,8 @@ typedef struct ccsr_rio { typedef struct ccsr_gur { uint porpllsr; /* 0xe0000 - POR PLL ratio status register */ uint porbmsr; /* 0xe0004 - POR boot mode status register */ -#define MPC8610_PORBMSR_HA 0x00070000 -#define MPC8610_PORBMSR_HA_SHIFT 16 -#define MPC8641_PORBMSR_HA 0x00060000 -#define MPC8641_PORBMSR_HA_SHIFT 17 uint porimpscr; /* 0xe0008 - POR I/O impedance status and control register */ uint pordevsr; /* 0xe000c - POR I/O device status regsiter */ -#define MPC8610_PORDEVSR_IO_SEL 0x00380000 -#define MPC8610_PORDEVSR_IO_SEL_SHIFT 19 -#define MPC8641_PORDEVSR_IO_SEL 0x000F0000 -#define MPC8641_PORDEVSR_IO_SEL_SHIFT 16 -#define MPC86xx_PORDEVSR_CORE1TE 0x00000080 /* ASMP (Core1 addr trans) */ uint pordbgmsr; /* 0xe0010 - POR debug mode status register */ char res1[12]; uint gpporcr; /* 0xe0020 - General-purpose POR configuration register */ @@ -1210,11 +1201,6 @@ typedef struct ccsr_gur { uint pmuxcr; /* 0xe0060 - Alternate function signal multiplex control */ char res6[12]; uint devdisr; /* 0xe0070 - Device disable control */ -#define MPC86xx_DEVDISR_PCIEX1 0x80000000 -#define MPC86xx_DEVDISR_PCIEX2 0x40000000 -#define MPC86xx_DEVDISR_PCI1 0x80000000 -#define MPC86xx_DEVDISR_PCIE1 0x40000000 -#define MPC86xx_DEVDISR_PCIE2 0x20000000 char res7[12]; uint powmgtcsr; /* 0xe0080 - Power management status and control register */ char res8[12]; @@ -1225,7 +1211,6 @@ typedef struct ccsr_gur { uint svr; /* 0xe00a4 - System version register */ char res10a[8]; uint rstcr; /* 0xe00b0 - Reset control register */ -#define MPC86xx_RSTCR_HRST_REQ 0x00000002 char res10b[1868]; uint clkdvdr; /* 0xe0800 - Clock Divide register */ char res10c[796]; @@ -1250,6 +1235,24 @@ typedef struct ccsr_gur { char res16[184]; } ccsr_gur_t;
+#define MPC8610_PORBMSR_HA 0x00070000 +#define MPC8610_PORBMSR_HA_SHIFT 16 +#define MPC8641_PORBMSR_HA 0x00060000 +#define MPC8641_PORBMSR_HA_SHIFT 17 +#define MPC8610_PORDEVSR_IO_SEL 0x00380000 +#define MPC8610_PORDEVSR_IO_SEL_SHIFT 19 +#define MPC8641_PORDEVSR_IO_SEL 0x000F0000 +#define MPC8641_PORDEVSR_IO_SEL_SHIFT 16 +#define MPC86xx_PORDEVSR_CORE1TE 0x00000080 /* ASMP (Core1 addr trans) */ +#define MPC86xx_DEVDISR_PCIEX1 0x80000000 +#define MPC86xx_DEVDISR_PCIEX2 0x40000000 +#define MPC86xx_DEVDISR_PCI1 0x80000000 +#define MPC86xx_DEVDISR_PCIE1 0x40000000 +#define MPC86xx_DEVDISR_PCIE2 0x20000000 +#define MPC86xx_DEVDISR_CPU0 0x00008000 +#define MPC86xx_DEVDISR_CPU1 0x00004000 +#define MPC86xx_RSTCR_HRST_REQ 0x00000002 + /* * Watchdog register block(0xe_4000-0xe_4fff) */