Blackfin: support boards with no external memory
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/lib_blackfin/board.c b/lib_blackfin/board.c
index b414b2a..ed4e77b 100644
--- a/lib_blackfin/board.c
+++ b/lib_blackfin/board.c
@@ -130,17 +130,26 @@
dcplb_add(0xFF800000, L1_DMEMORY);
++i;
- icplb_add(CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK, SDRAM_IKERNEL);
- dcplb_add(CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK, SDRAM_DKERNEL);
- ++i;
+ if (CONFIG_MEM_SIZE) {
+ uint32_t mbase = CONFIG_SYS_MONITOR_BASE;
+ uint32_t mend = mbase + CONFIG_SYS_MONITOR_LEN;
+ mbase &= CPLB_PAGE_MASK;
+ mend &= CPLB_PAGE_MASK;
- /* If the monitor crosses a 4 meg boundary, we'll need
- * to lock two entries for it.
- */
- if ((CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK) != ((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK)) {
- icplb_add((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK, SDRAM_IKERNEL);
- dcplb_add((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK, SDRAM_DKERNEL);
+ icplb_add(mbase, SDRAM_IKERNEL);
+ dcplb_add(mbase, SDRAM_DKERNEL);
++i;
+
+ /*
+ * If the monitor crosses a 4 meg boundary, we'll need
+ * to lock two entries for it. We assume it doesn't
+ * cross two 4 meg boundaries ...
+ */
+ if (mbase != mend) {
+ icplb_add(mend, SDRAM_IKERNEL);
+ dcplb_add(mend, SDRAM_DKERNEL);
+ ++i;
+ }
}
icplb_add(0x20000000, SDRAM_INON_CHBL);