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bsp/qoriq: Flush and invalidate L2 cache

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This commit is contained in:
Sebastian Huber
2015-10-27 10:43:27 +01:00
parent ac4f1718db
commit f966d608e2
2 changed files with 27 additions and 0 deletions
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4
c/src/lib/libbsp/powerpc/qoriq/configure.ac
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@@ -164,6 +164,10 @@ RTEMS_BSPOPTS_SET([QORIQ_MMU_DEVICE_MAS7],[qoriq_t*],[0xf])
RTEMS_BSPOPTS_SET([QORIQ_MMU_DEVICE_MAS7],[*],[0x0])
RTEMS_BSPOPTS_HELP([QORIQ_MMU_DEVICE_MAS7],[MAS7 value for device TLB1 entries])
RTEMS_BSPOPTS_SET([QORIQ_L2CSR0],[qoriq_t*],[0xfec20000])
RTEMS_BSPOPTS_SET([QORIQ_L2CSR0],[*],[])
RTEMS_BSPOPTS_HELP([QORIQ_L2CSR0],[address of L2CSR0 register])
RTEMS_BSPOPTS_SET([QORIQ_CLOCK_TIMER],[qoriq_core_1],[4])
RTEMS_BSPOPTS_SET([QORIQ_CLOCK_TIMER],[*],[0])
RTEMS_BSPOPTS_HELP([QORIQ_CLOCK_TIMER],[global timer used for system clock, 0..3 maps to A0..A3, and 4..7 maps to B0..B3])

23
c/src/lib/libbsp/powerpc/qoriq/start/start.S
View File

@@ -80,6 +80,29 @@ _start:
bne 1b
isync
#ifdef QORIQ_L2CSR0
/* Flush L2 cache of first cluster */
LWI r4, QORIQ_L2CSR0
lwz r3, 0(r4)
oris r3, r3, FSL_EIS_L2CSR0_L2FL >> 16
stw r3, 0(r4)
1:
lwz r3, 0(r4)
andis. r3, r3, FSL_EIS_L2CSR0_L2FL >> 16
bne 1b
isync
/* Invalidate L2 cache of first cluster */
lwz r3, 0(r4)
oris r3, r3, FSL_EIS_L2CSR0_L2FI >> 16
stw r3, 0(r4)
1:
lwz r3, 0(r4)
andis. r3, r3, FSL_EIS_L2CSR0_L2FI >> 16
bne 1b
isync
#endif
/* Get start stack */
LWI START_STACK, start_stack_end