From 08b86e3b8f5209b1c39f22a6d367f347eaf0f8be Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Wed, 28 Oct 2020 13:30:01 +0800 Subject: hw/riscv: microchip_pfsoc: Document where to look at the SoC memory maps It is not easy to find out the memory map for a specific component in the PolarFire SoC as the information is scattered in different documents. Add some comments so that people can know where to get such information from the Microchip website. Signed-off-by: Bin Meng Reviewed-by: Alistair Francis Message-id: 1603863010-15807-2-git-send-email-bmeng.cn@gmail.com Signed-off-by: Alistair Francis --- hw/riscv/microchip_pfsoc.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c index 4627179..6aac849 100644 --- a/hw/riscv/microchip_pfsoc.c +++ b/hw/riscv/microchip_pfsoc.c @@ -66,6 +66,24 @@ /* GEM version */ #define GEM_REVISION 0x0107010c +/* + * The complete description of the whole PolarFire SoC memory map is scattered + * in different documents. There are several places to look at for memory maps: + * + * 1 Chapter 11 "MSS Memory Map", in the doc "UG0880: PolarFire SoC FPGA + * Microprocessor Subsystem (MSS) User Guide", which can be downloaded from + * https://www.microsemi.com/document-portal/doc_download/ + * 1244570-ug0880-polarfire-soc-fpga-microprocessor-subsystem-mss-user-guide, + * describes the whole picture of the PolarFire SoC memory map. + * + * 2 A zip file for PolarFire soC memory map, which can be downloaded from + * https://www.microsemi.com/document-portal/doc_download/ + * 1244581-polarfire-soc-register-map, contains the following 2 major parts: + * - Register Map/PF_SoC_RegMap_V1_1/pfsoc_regmap.htm + * describes the complete integrated peripherals memory map + * - Register Map/PF_SoC_RegMap_V1_1/MPFS250T/mpfs250t_ioscb_memmap_dri.htm + * describes the complete IOSCB modules memory maps + */ static const struct MemmapEntry { hwaddr base; hwaddr size; -- cgit v1.1