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psim: Rework device tree so devices do not conflict with 256MB RAM

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updates #3849.
This commit is contained in:
Joel Sherrill
2020-03-05 17:51:12 -06:00
parent fa3005f6c1
commit 097ea1ecc5
4 changed files with 11 additions and 14 deletions
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15
bsps/powerpc/psim/README
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@@ -1,5 +1,5 @@
BSP NAME: psim
BOARD: PowerPC Simulator
BOARD: PowerPC Simulator in GDB (psim)
BUS: N/A
CPU FAMILY: ppc
CPU: PowerPC 603, 603e, 604
@@ -38,11 +38,12 @@ STOP BITS: na
Notes
=====
The device tree for this BSP is included with rtems-tools and automated
testing of psim is supported by the RTEMS Tester. See
rtems-tools/tester/rtems/testing/bsps/psim-device-tree for specifics. This
file must be kept in sync with startup/linkcmds and the MMU initialization
in the BSP.
Based on papyrus bsp which only really supports
the PowerOpen ABI with an ELF assembler.
For the multiprocessing tests to run, you must have a modified version of
the PowerPC Simulator psim which supports an area of UNIX shared memory
and UNIX semaphore mapped into the PowerPC address space.
For the multiprocessing tests to run, psim supports an area of UNIX
shared memory and UNIX semaphore mapped into the PowerPC address space.

4
bsps/powerpc/psim/start/bspstart.c
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@@ -104,8 +104,8 @@ void bsp_start( void )
setdbat(0, 0x0<<28, 0x0<<28, 1<<28, _PAGE_RW);
setibat(0, 0x0<<28, 0x0<<28, 1<<28, 0);
/* PCI */
setdbat(1, 0x8<<24, 0x8<<24, 1<<24, IO_PAGE);
setdbat(2, 0xc<<24, 0xc<<24, 1<<24, IO_PAGE);
setdbat(1, 0x08<<24, 0x08<<24, 1<<24, IO_PAGE);
setdbat(2, 0xfc<<24, 0xfc<<24, 1<<24, IO_PAGE);
_write_MSR(_read_MSR() | MSR_DR | MSR_IR);
__asm__ volatile("sync; isync");

4
bsps/powerpc/psim/start/device-tree
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@@ -1,4 +0,0 @@
#/openprom/init/register/pc 0
#/openprom/options/smp 2
#/openprom/options/oea-memory-size 4194304
/openprom/options/oea-memory-size 0x10000000

2
bsps/powerpc/psim/start/linkcmds
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@@ -35,7 +35,7 @@ REGION_ALIAS ("REGION_NVRAM", EMPTY);
PROVIDE (PSIM_INSTRUCTIONS_PER_MICROSECOND = 10000);
PSIM = 0x0c000000;
PSIM = 0xfc000000;
/* Allocate the maximum size to the small data area */
bsp_section_small_data_area_size = 65536;