| Matt Spinler | 9eda7bc | 2017-01-19 15:29:35 -0600 | [diff] [blame] | 1 | From e21d90ae8c131eae9d78e3d06f29cab55c952884 Mon Sep 17 00:00:00 2001 |
| 2 | From: Matt Spinler <spinler@us.ibm.com> |
| 3 | Date: Thu, 19 Jan 2017 09:06:48 -0600 |
| 4 | Subject: [PATCH] CFAM reg 0x2918 access hack |
| 5 | |
| 6 | --- |
| 7 | libpdbg/bmcfsi.c | 11 ++++++++++- |
| 8 | 1 file changed, 10 insertions(+), 1 deletion(-) |
| 9 | |
| 10 | diff --git a/libpdbg/bmcfsi.c b/libpdbg/bmcfsi.c |
| 11 | index 64dbd69..f763f2a 100644 |
| 12 | --- a/libpdbg/bmcfsi.c |
| 13 | +++ b/libpdbg/bmcfsi.c |
| 14 | @@ -247,7 +247,16 @@ static uint64_t fsi_abs_ar(uint32_t addr, int read) |
| 15 | /* Reformat the address. I'm not sure I fully understand this |
| 16 | * yet but we basically shift the bottom byte and add 0b01 |
| 17 | * (for the write word?) */ |
| 18 | - addr = ((addr & 0x1fff00) | ((addr & 0xff) << 2)) << 1; |
| 19 | + |
| 20 | + /* Hack: this shifting doesn't work for all addresses, but it does |
| 21 | + * work for 2918 and (and 2nd chip 2918) so use it just for that */ |
| 22 | + if ((addr == 0x2918) || (addr == 0x102918)) { |
| 23 | + addr = ((addr & 0x1ffe00) | ((addr & 0x1ff) << 2)) << 1; |
| 24 | + } |
| 25 | + else { |
| 26 | + addr = ((addr & 0x1fff00) | ((addr & 0xff) << 2)) << 1; |
| 27 | + } |
| 28 | + |
| 29 | addr |= 0x3; |
| 30 | addr |= slave_id << 26; |
| 31 | addr |= (0x8ULL | !!(read)) << 22; |
| 32 | -- |
| 33 | 2.11.0 |
| 34 | |