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Diffstat (limited to 'results/scraper/launchpad/1438144')
| -rw-r--r-- | results/scraper/launchpad/1438144 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/results/scraper/launchpad/1438144 b/results/scraper/launchpad/1438144 new file mode 100644 index 00000000..390f26c5 --- /dev/null +++ b/results/scraper/launchpad/1438144 @@ -0,0 +1,17 @@ +Page sizes are not interpreted correctly for E500/E500MC + +http://cache.freescale.com/files/32bit/doc/ref_manual/E500CORERM.pdf - see 2.12.5.2 MAS Register 1 (MAS1), p. 2-41 +http://cache.freescale.com/files/32bit/doc/ref_manual/E500MCRM.pdf - see 2.16.6.2 MAS Register 1 (MAS1), p. 2-54 + +According to these documents, variable page size for TLB1 is computed as 4K ** TSIZE. + +However, QEMU always treats it as if it was 1K << TSIZE, even if options like "-cpu e500mc" are supplied to qemu. + +This is not a bug. MMU v2 (implemented in e6500) extended the TSIZE field so that 1K << +TSIZE is correct. The extension was on the LSB side so that it works +fine as long as the low bit of the new TSIZE (which is reserved on +e500v2/mc) is zero. + + +You're absolutely right. Sorry for bothering. + |