diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2011-09-22 11:26:38 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-09-27 10:27:31 +0200 |
| commit | 0c638571f0168760c0157ec4c7be512a2353f6ad (patch) | |
| tree | 3146b1e86d311e688927eb25616115765b9ddc52 /arch | |
| parent | d01070c8af7588337fd79bc37d63a8de6435d771 (diff) | |
| download | barebox-0c638571f0168760c0157ec4c7be512a2353f6ad.tar.gz barebox-0c638571f0168760c0157ec4c7be512a2353f6ad.tar.xz | |
ppc mpc5200: add function to determine configured sdram size
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ppc/mach-mpc5xxx/cpu.c | 17 | ||||
| -rw-r--r-- | 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 391c705630..cf2ca2fb68 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 d7d081137b..aad2418fd4 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 */ |