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Some Armada 8K boards like Macchiatobin and Clearfog GT-8K use RAM from external DIMM. Hard coding the RAM size in the device-tree is not convenient. Fortunately, the ATF that initializes the RAM knows the size of RAM, and U-Boot can query the ATF using a SMC call. The ATF maps the lower 3G of RAM starting at address 0. Higher RAM is mapped at 4G. This leaves a 1G hole between 3G and 4G for IO peripherals. Use a second bi_dram[] entry to describe the higher RAM area. As a result, CONFIG_NR_DRAM_BANKS must be set to 2 to use more than 3GB RAM. This code in this commit is mostly taken from downstream Marvell U-Boot code by Grzegorz Jaszczyk. Cc: Grzegorz Jaszczyk <jaz@semihalf.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Stefan Roese <sr@denx.de> |
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| .. | ||
| armada8k | ||
| armada3700 | ||
| include/mach | ||
| serdes | ||
| .gitignore | ||
| arm64-common.c | ||
| cpu.c | ||
| dram.c | ||
| efuse.c | ||
| gpio.c | ||
| Kconfig | ||
| kwbimage.cfg.in | ||
| lowlevel_spl.S | ||
| Makefile | ||
| mbus.c | ||
| spl.c | ||
| timer.c | ||