Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
arch/ppc/mach-mpc5xxx/cpu.c | 17 +++++++++++++++++
arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h | 3 +++
2 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/arch/ppc/mach-mpc5xxx/cpu.c b/arch/ppc/mach-mpc5xxx/cpu.c
index 391c705..cf2ca2f 100644
--- a/arch/ppc/mach-mpc5xxx/cpu.c
+++ b/arch/ppc/mach-mpc5xxx/cpu.c
@@ -113,3 +113,20 @@ int cpu_init_board_data(bd_t *bd)
bd->bi_pcifreq = get_pci_clock();
return 0;
}
+
+unsigned long mpc5200_get_sdram_size(unsigned int cs)
+{
+ unsigned long size;
+
+ if (cs > 1)
+ return 0;
+
+ /* retrieve size of memory connected to SDRAM CS0 */
+ size = *(vu_long *)(MPC5XXX_SDRAM_CS0CFG + (cs * 4)) & 0xFF;
+ if (size >= 0x13)
+ size = (1 << (size - 0x13)) << 20;
+ else
+ size = 0;
+
+ return size;
+}
diff --git a/arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h b/arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h
index d7d0811..aad2418 100644
--- a/arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h
+++ b/arch/ppc/mach-mpc5xxx/include/mach/mpc5xxx.h
@@ -779,6 +779,9 @@ struct mpc5xxx_mscan {
/* function prototypes */
void loadtask(int basetask, int tasks);
+/* retrieve configured sdram size connected to a chipselect */
+unsigned long mpc5200_get_sdram_size(unsigned int cs);
+
#endif /* __ASSEMBLY__ */
#endif /* __ASMPPC_MPC5XXX_H */
--
1.7.6.3
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