Bin Meng 3eaea6eb4e hw/riscv: sifive_u: Add a dummy DDR memory controller device ... It is enough to simply map the SiFive FU540 DDR memory controller into the MMIO space using create_unimplemented_device(), to make the upstream U-Boot v2020.07 DDR memory initialization codes happy. Note we do not generate device tree fragment for the DDR memory controller. Since the controller data in device tree consumes a very large space (see fu540-hifive-unleashed-a00-ddr.dtsi in the U-Boot source), and it is only needed by U-Boot SPL but not any operating system, we choose not to generate the fragment here. This also means when testing with U-Boot SPL, the device tree has to come from U-Boot SPL itself, but not the one generated by QEMU on the fly. The memory has to be set to 8GiB to match the real HiFive Unleashed board when invoking QEMU (-m 8G). With this commit, QEMU can boot U-Boot SPL built for SiFive FU540 all the way up to loading U-Boot proper from MMC: $ qemu-system-riscv64 -nographic -M sifive_u,msel=6 -m 8G -bios u-boot-spl.bin U-Boot SPL 2020.07-rc3-00208-g88bd5b1 (Jun 08 2020 - 20:16:10 +0800) Trying to boot from MMC1 Unhandled exception: Load access fault EPC: 0000000008009be6 TVAL: 0000000010050014 The above exception is expected because QSPI is unsupported yet. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 1592268641-7478-6-git-send-email-bmeng.cn@gmail.com Message-Id: <1592268641-7478-6-git-send-email-bmeng.cn@gmail.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>		2020-06-19 08:25:27 -07:00
..
boot.h	riscv/boot: Add a missing header include	2020-06-03 09:11:51 -07:00
opentitan.h	riscv/opentitan: Connect the UART device	2020-06-19 08:24:07 -07:00
riscv_hart.h	riscv: hart: Add a "hartid-base" property to RISC-V hart array	2019-09-17 08:42:47 -07:00
riscv_htif.h
sifive_clint.h	hw/riscv: Provide rdtime callback for TCG in CLINT emulation	2020-02-27 13:46:37 -08:00
sifive_cpu.h	riscv: Add a sifive_cpu.h to include both E and U cpu type defines	2019-09-17 08:42:46 -07:00
sifive_e_prci.h	riscv: sifive_e: prci: Update the PRCI register block size	2019-09-17 08:42:46 -07:00
sifive_e.h	sifive_e: Support the revB machine	2020-06-19 08:24:07 -07:00
sifive_gpio.h	hw/riscv: sifive_gpio: Add a new 'ngpio' property	2020-06-19 08:24:07 -07:00
sifive_plic.h
sifive_test.h	riscv: sifive_test: Add reset functionality	2019-09-17 08:42:44 -07:00
sifive_u_otp.h	riscv: sifive: Implement a model for SiFive FU540 OTP	2019-09-17 08:42:49 -07:00
sifive_u_prci.h	riscv: sifive_u: Reference PRCI clocks in UART and ethernet nodes	2019-09-17 08:42:48 -07:00
sifive_u.h	hw/riscv: sifive_u: Add a dummy DDR memory controller device	2020-06-19 08:25:27 -07:00
sifive_uart.h
spike.h	hw/riscv: spike: Remove deprecated ISA specific machines	2020-06-03 09:11:51 -07:00
virt.h	riscv: virt: Use Goldfish RTC device	2020-02-10 12:01:38 -08:00