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authorMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>2022-03-05 15:55:23 +0000
committerMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>2022-03-09 09:29:10 +0000
commitdd2a56ab6f4743d77f3586749eb6934983944f1f (patch)
treeab45e04ac4740e0a6081c605ea08f0f6842fb2d3 /hw/display
parent4718125192875085e6b1104e8286dbda7d4db682 (diff)
downloadqemu-dd2a56ab6f4743d77f3586749eb6934983944f1f.zip
qemu-dd2a56ab6f4743d77f3586749eb6934983944f1f.tar.gz
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macfb: increase number of registers saved in MacfbState
The MacOS toolbox ROM accesses a number of addresses between 0x0 and 0x200 during initialisation and resolution changes. Whilst the function of many of these registers is unknown, it is worth the minimal cost of saving these extra values as part of migration to help future-proof the migration stream for the q800 machine as it starts to stabilise. Note this is a migration break, but since there are upcoming incompatible changes for the q800 machine (and migration does not even succeed without these patches) then this is not an issue. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220305155530.9265-4-mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Diffstat (limited to 'hw/display')
-rw-r--r--hw/display/macfb.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/hw/display/macfb.c b/hw/display/macfb.c
index fb54b46..dfdae90 100644
--- a/hw/display/macfb.c
+++ b/hw/display/macfb.c
@@ -537,6 +537,10 @@ static uint64_t macfb_ctrl_read(void *opaque,
case DAFB_MODE_SENSE:
val = macfb_sense_read(s);
break;
+ default:
+ if (addr < MACFB_CTRL_TOPADDR) {
+ val = s->regs[addr >> 2];
+ }
}
trace_macfb_ctrl_read(addr, val, size);
@@ -592,6 +596,10 @@ static void macfb_ctrl_write(void *opaque,
macfb_invalidate_display(s);
}
break;
+ default:
+ if (addr < MACFB_CTRL_TOPADDR) {
+ s->regs[addr >> 2] = val;
+ }
}
trace_macfb_ctrl_write(addr, val, size);