For MC, 512 MB DDR is reserved because of MC's alignment requirement. But for MC binaries needing 128MB or 256MB DDR memory, rest of the memory is a waste. So reporting this extra memory to Linux through dtb memory fixup.
Signed-off-by: Meenakshi Aggarwal meenakshi.aggarwal@nxp.com --- board/freescale/lx2160a/lx2160a.c | 28 +++++++++++++++++++++++++++- drivers/net/fsl-mc/mc.c | 13 +++++++++++++ include/fsl-mc/fsl_mc.h | 1 + 3 files changed, 41 insertions(+), 1 deletion(-)
diff --git a/board/freescale/lx2160a/lx2160a.c b/board/freescale/lx2160a/lx2160a.c index ad72eed..b763f6d 100644 --- a/board/freescale/lx2160a/lx2160a.c +++ b/board/freescale/lx2160a/lx2160a.c @@ -532,8 +532,15 @@ void board_quiesce_devices(void) int ft_board_setup(void *blob, bd_t *bd) { int i; + bool mc_memory_bank = false; + +#ifdef CONFIG_FSL_MC_ENET + u64 base[CONFIG_NR_DRAM_BANKS + 1]; + u64 size[CONFIG_NR_DRAM_BANKS + 1]; +#else u64 base[CONFIG_NR_DRAM_BANKS]; u64 size[CONFIG_NR_DRAM_BANKS]; +#endif
ft_cpu_setup(blob, bd);
@@ -556,7 +563,26 @@ int ft_board_setup(void *blob, bd_t *bd) size[2] = gd->arch.resv_ram - base[2]; #endif
- fdt_fixup_memory_banks(blob, base, size, CONFIG_NR_DRAM_BANKS); +#ifdef CONFIG_FSL_MC_ENET + fdt_fixup_mc_ddr(&base[3], &size[3]); + + if (base[3] != 0) { + for (i = 0; i <= CONFIG_NR_DRAM_BANKS; i++) { + if (base[i] == 0 && size[i] == 0) { + base[i] = base[3]; + size[i] = size[3]; + break; + } + } + if (i == CONFIG_NR_DRAM_BANKS) + mc_memory_bank = true; + } +#endif + if (mc_memory_bank) + fdt_fixup_memory_banks( + blob, base, size, CONFIG_NR_DRAM_BANKS + 1); + else + fdt_fixup_memory_banks(blob, base, size, CONFIG_NR_DRAM_BANKS);
#ifdef CONFIG_USB fsl_fdt_fixup_dr_usb(blob, bd); diff --git a/drivers/net/fsl-mc/mc.c b/drivers/net/fsl-mc/mc.c index dddc9cc..d7a2e8f 100644 --- a/drivers/net/fsl-mc/mc.c +++ b/drivers/net/fsl-mc/mc.c @@ -285,6 +285,19 @@ static int mc_fixup_dpl_mac_addr(void *blob, int dpmac_id, MC_FIXUP_DPL); }
+void fdt_fixup_mc_ddr(u64 *base, u64 *size) +{ + u64 mc_size = mc_get_dram_block_size(); + + if (mc_size < MC_DRAM_BLOCK_DEFAULT_SIZE) { + *base = mc_get_dram_addr() + mc_size; + *size = MC_DRAM_BLOCK_DEFAULT_SIZE - mc_size; + } else { + *base = 0; + *size = 0; + } +} + void fdt_fsl_mc_fixup_iommu_map_entry(void *blob) { u32 *prop; diff --git a/include/fsl-mc/fsl_mc.h b/include/fsl-mc/fsl_mc.h index aef40d3..492a714 100644 --- a/include/fsl-mc/fsl_mc.h +++ b/include/fsl-mc/fsl_mc.h @@ -54,6 +54,7 @@ struct mc_ccsr_registers { void fdt_fsl_mc_fixup_iommu_map_entry(void *blob); int get_mc_boot_status(void); int get_dpl_apply_status(void); +void fdt_fixup_mc_ddr(u64 *base, u64 *size); #ifdef CONFIG_SYS_LS_MC_DRAM_AIOP_IMG_OFFSET int get_aiop_apply_status(void); #endif