diff options
Diffstat (limited to 'hw/nx-rng.c')
| -rw-r--r-- | hw/nx-rng.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/hw/nx-rng.c b/hw/nx-rng.c index 9cc5317f..063848d9 100644 --- a/hw/nx-rng.c +++ b/hw/nx-rng.c @@ -28,7 +28,7 @@ void nx_create_rng_node(struct dt_node *node) u64 xbar, xcfg; u32 pb_base; u32 gcid; - u64 rng_addr, rng_len, len; + u64 rng_addr, rng_len, len, addr_mask; struct dt_node *rng; int rc; @@ -38,9 +38,11 @@ void nx_create_rng_node(struct dt_node *node) if (dt_node_is_compatible(node, "ibm,power7-nx")) { xbar = pb_base + NX_P7_RNG_BAR; xcfg = pb_base + NX_P7_RNG_CFG; + addr_mask = NX_P7_RNG_BAR_ADDR; } else if (dt_node_is_compatible(node, "ibm,power8-nx")) { xbar = pb_base + NX_P8_RNG_BAR; xcfg = pb_base + NX_P8_RNG_CFG; + addr_mask = NX_P8_RNG_BAR_ADDR; } else { prerror("NX%d: Unknown NX type!\n", gcid); return; @@ -55,16 +57,13 @@ void nx_create_rng_node(struct dt_node *node) return; /* - * We use the P8 BAR constants. The layout of the BAR is the - * same, with more bits at the top of P8 which are hard wired to - * 0 on P7. We also mask in-place rather than using GETFIELD - * for the base address as we happen to *know* that it's properly - * aligned in the register. + * We mask in-place rather than using GETFIELD for the base address + * as we happen to *know* that it's properly aligned in the register. * * FIXME? Always assusme BAR gets a valid address from FSP */ - rng_addr = bar & NX_P8_RNG_BAR_ADDR; - len = GETFIELD(NX_P8_RNG_BAR_SIZE, bar); + rng_addr = bar & addr_mask; + len = GETFIELD(NX_RNG_BAR_SIZE, bar); if (len > 4) { prerror("NX%d: Corrupted bar size %lld\n", gcid, len); return; @@ -80,12 +79,12 @@ void nx_create_rng_node(struct dt_node *node) gcid, rng_addr, rng_addr + rng_len - 1); /* RNG must be enabled before MMIO is enabled */ - rc = xscom_write(gcid, xcfg, cfg | NX_P8_RNG_CFG_ENABLE); + rc = xscom_write(gcid, xcfg, cfg | NX_RNG_CFG_ENABLE); if (rc) return; /* The BAR needs to be enabled too */ - rc = xscom_write(gcid, xbar, bar | NX_P8_RNG_BAR_ENABLE); + rc = xscom_write(gcid, xbar, bar | NX_RNG_BAR_ENABLE); if (rc) return; rng = dt_new_addr(dt_root, "hwrng", rng_addr); |
