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| author |   Ivan Mikhaylov <ivan@de.ibm.com> | 2017-12-01 18:58:25 +0300 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2017-12-11 13:03:32 +1100 |
| commit | 9c4c374676a12db4a452534f3347323d35c32d1a (patch) | |
| tree | af5d1a55c0fa4bd6a513bef219d24d229b6107d8 /arch/powerpc/platforms/44x | |
| parent | powerpc/44x/fsp2: Add fsp2 headers (diff) | |
| download | linux-dev-9c4c374676a12db4a452534f3347323d35c32d1a.tar.xz linux-dev-9c4c374676a12db4a452534f3347323d35c32d1a.zip | |
powerpc/44x/fsp2: Interrupt handling setup
* clear out any possible plb6 errors
* board interrupt handling setup within l2 reg set
* fsp2 parity error setup
All those points are needed for correct interrupt
handling on board level including error handling report.
Reviewed-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Ivan Mikhaylov <ivan@de.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms/44x')
| -rw-r--r-- | arch/powerpc/platforms/44x/fsp2.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/44x/fsp2.c b/arch/powerpc/platforms/44x/fsp2.c index 92e98048404f..baed409c9663 100644 --- a/arch/powerpc/platforms/44x/fsp2.c +++ b/arch/powerpc/platforms/44x/fsp2.c @@ -27,6 +27,8 @@ #include <asm/time.h> #include <asm/uic.h> #include <asm/ppc4xx.h> +#include <asm/dcr.h> +#include "fsp2.h" static __initdata struct of_device_id fsp2_of_bus[] = { { .compatible = "ibm,plb4", }, @@ -44,10 +46,45 @@ machine_device_initcall(fsp2, fsp2_device_probe); static int __init fsp2_probe(void) { + u32 val; unsigned long root = of_get_flat_dt_root(); if (!of_flat_dt_is_compatible(root, "ibm,fsp2")) return 0; + + /* Clear BC_ERR and mask snoopable request plb errors. */ + val = mfdcr(DCRN_PLB6_CR0); + val |= 0x20000000; + mtdcr(DCRN_PLB6_BASE, val); + mtdcr(DCRN_PLB6_HD, 0xffff0000); + mtdcr(DCRN_PLB6_SHD, 0xffff0000); + + /* L2 machine checks */ + mtl2(L2PLBMCKEN0, 0xffffffff); + mtl2(L2PLBMCKEN1, 0x0000ffff); + mtl2(L2ARRMCKEN0, 0xffffffff); + mtl2(L2ARRMCKEN1, 0xffffffff); + mtl2(L2ARRMCKEN2, 0xfffff000); + mtl2(L2CPUMCKEN, 0xffffffff); + mtl2(L2RACMCKEN0, 0xffffffff); + mtl2(L2WACMCKEN0, 0xffffffff); + mtl2(L2WACMCKEN1, 0xffffffff); + mtl2(L2WACMCKEN2, 0xffffffff); + mtl2(L2WDFMCKEN, 0xffffffff); + + /* L2 interrupts */ + mtl2(L2PLBINTEN1, 0xffff0000); + + /* + * At a global level, enable all L2 machine checks and interrupts + * reported by the L2 subsystems, except for the external machine check + * input (UIC0.1). + */ + mtl2(L2MCKEN, 0x000007ff); + mtl2(L2INTEN, 0x000004ff); + + /* Enable FSP-2 configuration logic parity errors */ + mtdcr(DCRN_CONF_EIR_RS, 0x80000000); return 1; } |