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2020-10-26riscv: fu540: dts: Correct reg size of clint nodePragnesh Patel
Signed-off-by: Pragnesh Patel <pragnesh.patel@sifive.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-10-26riscv: Move timer portions of SiFive CLINT to drivers/timerSean Anderson
Half of this driver is a DM-based timer driver, and half is RISC-V-specific IPI code. Move the timer portions in with the other timer drivers. The KConfig is not moved, since it also enables IPIs. It could also be split into two configs, but no boards use the timer but not the IPI atm, so I haven't split it. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Rick Chen <rick@andestech.com>
2020-10-26timer: Add _TIMER suffix to Andes PLMT KconfigSean Anderson
This matches the naming scheme of other timer drivers. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Rick Chen <rick@andestech.com>
2020-10-26riscv: Move Andes PLMT driver to drivers/timerSean Anderson
This is a regular timer driver, and should live with the other timer drivers. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Rick Chen <rick@andestech.com>
2020-10-26riscv: k210: Reduce DMA block sizeSean Anderson
Although the max DMA size supported by the hardware register is 22 bits (or 4M), the Linux driver for this device only supports transfers of up to 2M. On a device with 8M total memory, I don't think it will make too much of a difference. Reported-by: Damien Le Moal <Damien.LeMoal@wdc.com> Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-10-26riscv: Only enable OF_BOARD_FIXUP for S-ModeSean Anderson
It is unsafe to enable OF_BOARD_FIXUP only based on OF_SEPARATE. OF_SEPARATE may indicate that the user wishes U-Boot to use a different device tree than one obtained via OF_PRIOR_STAGE. However, OF_SEPARATE may also indicate that the device tree which would be obtained via OF_PRIOR_STAGE is invalid, nonexistant, or otherwise unusable. In this latter case, enabling OF_BOARD_FIXUP will result in corruption of the device tree. To remedy this, only enable OF_BOARD_FIXUP if U-Boot is configured for S-Mode. Fixes: 1c17e55594a394ced7de88d91be294eaf8c564c1 Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Leo Liang <ycliang@andestech.com>
2020-10-22timer: Return count from timer_ops.get_countSean Anderson
No timer drivers return an error from get_count. Instead of possibly returning an error, just return the count directly. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2020-10-08riscv: add DT binding for BOOT button on Maix boardHeinrich Schuchardt
Add a device tree binding for the BOOT button on the Maix board. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Sean Anderson <seanga2@gmail.com> Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-10-08riscv: Add pinmux and gpio bindings for Kendryte K210Sean Anderson
This patch adds the necessary device tree bindings. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Rick Chen <rick@andestech.com>
2020-10-05Merge branch 'next'Tom Rini
Bring in the assorted changes that have been staged in the 'next' branch prior to release. Signed-off-by: Tom Rini <trini@konsulko.com>
2020-09-30riscv: Add some comments to start.SSean Anderson
This adds comments regarding the ordering and purpose of certain instructions as I understand them. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com> Reviewed-by: Leo Liang <ycliang@andestech.com>
2020-09-30riscv: Ensure gp is NULL or points to valid dataSean Anderson
This ensures constructs like `if (gd & gd->...) { ... }` work when accessing the global data pointer. Without this change, it was possible for a very early trap to cause _exit_trap to directly or indirectly (through printf) to read arbitrary memory. This could cause a second trap, preventing show_regs from being printed. printf (and specifically puts) uses gd to determine what function to print with. These functions in turn use gd to find the serial device, etc. However, before accessing gd, puts first checks to see if it is non-NULL. This indicates an existing (perhaps undocumented) assumption that either gd is NULL or it is completely valid. Before this patch, gd either points to unexpected data (because it retains the value it did from the prior-stage) or points to uninitialized data (because it has not yet been initialized by board_init_f_init_reserve) until the hart has acquired available_harts_lock. This can cause two problems, depending on the value of gd->flags. If GD_FLG_SERIAL_READY is unset, then some garbage data will be printed to stdout, but there will not be a second trap. However, if GD_FLG_SERIAL_READY is set, then puts will try to print with serial_puts, which will likely cause a second trap. After this patch, gd is zero up until either a hart has set it in wait_for_gd_init, or until it is set by arch_init_gd. This prevents its usage before its data is initialized because both handle_trap and puts ensure that gd is nonzero before using it. After gd has been set, it is OK to access it because its data has been cleared (and so flags is valid). XIP cannot use locks because flash is not writable. This leaves it vulnerable to the same class of bugs regarding already-pending IPIs as before this series. Fixing that would require finding another method of synchronization, which is outside the scope of this series. Fixes: 7c6ca03eae ("riscv: additional crash information") Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-09-30riscv: Consolidate fences into AMOs for available_harts_lockSean Anderson
We can reduce the number of instructions needed to use available_harts_lock by using the aq and rl suffixes for AMOs. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-09-30riscv: Clear pending IPIs on initializationSean Anderson
Even though we no longer call smp_function if an IPI was not sent by U-Boot, we still need to clear any IPIs which were pending from the execution environment. Otherwise, secondary harts will busy-wait in secondary_hart_loop, instead of relaxing. Along with the previous commit ("riscv: Use a valid bit to ignore already-pending IPIs"), this fixes SMP booting on the Kendryte K210. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-09-30riscv: Use a valid bit to ignore already-pending IPIsSean Anderson
Some IPIs may already be pending when U-Boot is started. This could be a problem if a secondary hart tries to handle an IPI before the boot hart has initialized the IPI device. To be specific, the Kendryte K210 ROM-based bootloader does not clear IPIs before passing control to U-Boot. Without this patch, the secondary hart jumps to address 0x0 as soon as it enters secondary_hart_loop, and then hangs in its trap handler. This commit introduces a valid bit so secondary harts know when and IPI originates from U-Boot, and it is safe to use the IPI API. The valid bit is initialized to 0 by board_init_f_init_reserve. Before this, secondary harts wait in wait_for_gd_init. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com> Reviewed-by: Leo Liang <ycliang@andestech.com>
2020-09-30riscv: Match memory barriers between send_ipi_many and handle_ipiSean Anderson
Without a matching barrier on the write side, the barrier in handle_ipi does nothing. It was entirely possible for the boot hart to write to addr, arg0, and arg1 *after* sending the IPI, because there was no barrier on the sending side. Fixes: 90ae281437 ("riscv: add option to wait for ack from secondary harts in smp functions") Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com> Reviewed-by: Leo Liang <ycliang@andestech.com>
2020-09-30Revert "riscv: Clear pending interrupts before enabling IPIs"Sean Anderson
Clearing MIP.MSIP is not guaranteed to do anything by the spec. In addition, most existing RISC-V hardware does nothing when this bit is set. The following commits "riscv: Use a valid bit to ignore already-pending IPIs" and "riscv: Clear pending IPIs on initialization" should implement the original intent of the reverted commit in a more robust manner. This reverts commit 9472630337e7c4ac442066b5a752aaa8c3b4d4a6. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-09-30riscv: Update SiFive device tree for new CLINT driverSean Anderson
We currently do this in a u-boot specific dts, but hopefully we can get these bindings added in Linux in the future. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@openfive.com> Reviewed-by: Bin Meng <bin.meng@windriver.com>
2020-09-30riscv: Update Kendryte device tree for new CLINT driverSean Anderson
The interrupt controller property is removed from the clint binding because the clint is not an interrupt-controller. That is, no other devices have an interrupt which is controlled by the clint. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bin.meng@windriver.com>
2020-09-30riscv: Rework Sifive CLINT as UCLASS_TIMER driverSean Anderson
This converts the clint driver from the riscv-specific interface to be a DM-based UCLASS_TIMER driver. In addition, the SiFive DDR driver previously implicitly depended on the CLINT to select REGMAP. Unlike Andes's PLMT/PLIC (which AFAIK never have anything pass it a dtb), the SiFive CLINT is part of the device tree passed in by qemu. This device tree doesn't have a clocks or clock-frequency property on clint, so we need to fall back on the timebase-frequency property. Perhaps in the future we can get a clock-frequency property added to the qemu dtb. Unlike with the Andes PLMT, the Sifive CLINT is also an IPI controller. RISCV_SYSCON_CLINT is retained for this purpose. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@openfive.com>
2020-09-30riscv: Clean up initialization in Andes PLICSean Anderson
This merges the PLIC initialization code from two functions into one. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bin.meng@windriver.com>
2020-09-30riscv: Rework Andes PLMT as a UCLASS_TIMER driverSean Anderson
This converts the PLMT driver from the riscv-specific timer interface to be a DM-based UCLASS_TIMER driver. The clock-frequency/clocks properties are preferred over timebase-frequency for two reasons. First, properties which affect a device should be located near its binding in the device tree. Using timebase-frequency only really makes sense when the cpu itself is the timer device. This is the case when we read the time from a CSR, but not when there is a separate device. Second, it lets the device use the clock subsystem which adds flexibility. If the device is configured for a different clock speed, the timer can adjust itself. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-09-30riscv: Rework riscv timer driver to only support S-modeSean Anderson
The riscv-timer driver currently serves as a shim for several riscv timer drivers. This is not too desirable because it bypasses the usual timer selection via the driver model. There is no easy way to specify an alternate timing driver, or have the tick rate depend on the cpu's configured frequency. The timer drivers also do not have device structs, and so have to rely on storing parameters in gd_t. Lastly, there is no initialization call, so driver init is done in the same function which reads the time. This can result in confusing error messages. To a user, it looks like the driver failed when trying to read the time, whereas it may have failed while initializing. This patch removes the shim functionality from the riscv-timer driver, and has it instead implement the former rdtime.c timer driver. This is because existing u-boot users who pass in a device tree (e.g. qemu) do not create a timer device for S-mode u-boot. The existing behavior of creating the riscv-timer device in the riscv cpu driver must be kept. The actual reading of the CSRs has been redone in the style of Linux's get_cycles64. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-09-28riscv: restore global data pointer in trap handlerHeinrich Schuchardt
The gp register is used to store U-Boot's global data pointer. We should not assume that an UEFI application leaves the gp register unchanged as the UEFI specifications does not define who is the owner of the gp and tp registers. So the following sequence should be followed in the trap handler: * save the caller's gp register * restore the global data pointer * serve interrupts or print crash dump and reset * restore the caller's gp register Cc: Abner Chang <abner.chang@hpe.com> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-09-22fdtdec: optionally add property no-map to created reserved memory nodeEtienne Carriere
Add boolean input argument @no_map to helper function fdtdec_add_reserved_memory() to add or not "no-map" property for an added reserved memory node. Property no-map is used by the Linux kernel to not not map memory in its static memory mapping. It is needed for example for the| consistency of system non-cached memory and to prevent speculative accesses to some firewalled memory. No functional change. A later change will update to OPTEE library to add no-map property to OP-TEE reserved memory nodes. Signed-off-by: Etienne Carriere <etienne.carriere@st.com> Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-14riscv: define function set_gd()Heinrich Schuchardt
Function set_gd() is needed in the UEFI sub-system if the global data pointer is stored in a register. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-08-25cmd: provide command sbiHeinrich Schuchardt
Provide a command to display information about the SBI implementation. The output might look like: => sbi SBI 0.2 OpenSBI Extensions: sbi_set_timer sbi_console_putchar sbi_console_getchar sbi_clear_ipi sbi_send_ipi sbi_remote_fence_i sbi_remote_sfence_vma sbi_remote_sfence_vma_asid sbi_shutdown SBI Base Functionality Timer Extension IPI Extension RFENCE Extension Hart State Management Extension The command can be used to construct a unit test checking that the communication with the SEE is working. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Tested-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@openfive.com> Tested-by: Pragnesh Patel <pragnesh.patel@openfive.com> Reviewed-by: Rick Chen <rick@andestech.com> Tested-by: Rick Chen <rick@andestech.com>
2020-08-25riscv: fix building with CONFIG_SPL_SMP=nHeinrich Schuchardt
Building with CONFIG_SPL_SMP=n results in: arch/riscv/lib/spl.c: In function ‘jump_to_image_no_args’: arch/riscv/lib/spl.c:33:6: error: unused variable ‘ret’ [-Werror=unused-variable] 33 | int ret; | ^~~ Define the variable ret as __maybe_unused. Fixes: 191636e44898 ("riscv: Introduce SPL_SMP Kconfig option for U-Boot SPL") Fixes: 8c59f2023cc8 ("riscv: add SPL support") Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Rick Chen <rick@andestech.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@openfive.com>
2020-08-25riscv: fu540: Use correct API to get L2 cache controller base addressBin Meng
At present fdtdec_get_addr() is used to get L2 cache controller base address. This only works for a fixed #address-cells and #size-cells. Change to use fdtdec_get_addr_size_auto_parent() instead. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@openfive.com>
2020-08-14riscv: additional crash informationHeinrich Schuchardt
If an exception occurs, the relocated program counter and return address are required for an analysis. With this patch you get: => exception undefined Unhandled exception: Illegal instruction EPC: 0000000080595908 RA: 000000008059c0c6 TVAL: 000000008030c01e EPC: 0000000080007908 RA: 000000008000e0c6 reloc adjusted We can use the relocated addresses to find the involved functions in u.boot.map: .text.do_undefined 0x0000000080007908 0x8 cmd/built-in.o .text.cmd_process 0x000000008000dfcc 0x11a common/built-in.o 0x000000008000dfcc cmd_process If an exception occurs in an UEFI binary additionally the load addresses of the UEFI binaries are needed. With this patch: => setenv efi_selftest exception => bootefi selftest Unhandled exception: Illegal instruction EPC: 000000008042e18a RA: 000000008042e18a TVAL: 000000008030c01e EPC: 000000007fea018a RA: 000000007fea018a reloc adjusted UEFI image [0x0000000000000000:0xffffffffffffffff] '/\selftest' UEFI image [0x000000008042e000:0x000000008042e43f] pc=0x18a '/bug.efi' The value pc=0x18a matches the position of the illegal instruction in efi_selftest_miniapp_exception.efi (loaded as /bug.efi); asm volatile (".word 0xffffffff\n"); 00000180 93 85 C5 11 1C 64 22 85 82 97 FF FF FF FF 1C 64 Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Sean Anderson <seanga2@gmail.com> Tested-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-08-14riscv: sifive: fu540: redundant initializationHeinrich Schuchardt
We should not initialize a variable if the value is overwritten before being read. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com> Tested-by: Pragnesh Patel <pragnesh.patel@sifive.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-08-14riscv: remove redundant logical constraint.Heinrich Schuchardt
After if (ret) return ret; we know that ret is zero. Don't check it again. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com>
2020-08-14riscv: sifive/fu540: kconfig: Move FU540 driver related options to the SoC levelBin Meng
All FU540 driver related options should be in the SoC level Kconfig. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com> Tested-by: Pragnesh Patel <pragnesh.patel@sifive.com>
2020-08-14riscv: sifive/fu540: spl: Rename soc_spl_init()Bin Meng
spl_soc_init() seems to be a better name, as all SPL functions names start from the spl_ prefix. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com> Tested-by: Pragnesh Patel <pragnesh.patel@sifive.com>
2020-08-14riscv: Call spl_board_init_f() in the generic SPL board_init_f()Bin Meng
The generic SPL version of board_init_f() should give a call to board specific codes to initialize board in the SPL phase. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Rick Chen <rick@andestech.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com> Tested-by: Pragnesh Patel <pragnesh.patel@sifive.com>
2020-08-04sifive: reset: add DM based reset driver for SiFive SoC'sSagar Shrikant Kadam
PRCI module within SiFive SoC's has register with which we can reset the sub-systems within the SoC. The resets to DDR and ethernet sub systems within FU540-C000 SoC are active low, and are hold low by default on power-up. Currently these are directly asserted within prci driver via register read/write. With the DM based reset driver support here, we bind the reset driver with clock (prci) driver and assert the reset signals of both sub-system's appropriately. Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com> Reviewed-by: Pragnesh Patel <Pragnesh.patel@sifive.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Tested-by: Bin Meng <bin.meng@windriver.com>
2020-08-04fu540: dtsi: add reset producer and consumer entriesSagar Shrikant Kadam
The resets to DDR and ethernet sub-system are connected to PRCI device reset control register, these reset signals are active low and are held low at power-up. Add these reset producer and consumer details needed by the reset driver. Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com> Reviewed-by: Bin Meng <bin.meng@windriver.com>
2020-07-24riscv: dts: hifive-unleashed-a00: Make memory node available to SPLBin Meng
Make memory node available to SPL in prepration to updates to SiFive DDR RAM driver to read memory information from DT. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com>
2020-07-24riscv: Fix linking error when building u-boot-spl with no SMP supportLeo Yu-Chi Liang
Switch off SMP support when building u-boot-spl would cause linking error as follow: undefined reference to 'secondary hart relocate' and 'smp_call_function'. Add macro to wrap up proper code region that needs SMP configuration on. Signed-off by: Leo Liang <ycliang@andestech.com> Cc: rick@andestech.com Reviewed-by: Bin Meng <bin.meng@windriver.com>
2020-07-24Revert "riscv: Allow use of reset drivers"Bin Meng
This reverts commit 958a3f464c7f8ef7e10db9feb663e9e80445ce2f. A more appropriate change below is already in mainline. Commit fd31e4fd184f ("riscv: Do not build reset.c if SYSRESET is on") Revert this patch, so that U-Boot can be built successfully for SiFive Fu540 board. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Leo Liang <ycliang@andestech.com>
2020-07-24env: Enable SPI flash env for SiFive FU540Jagan Teki
SPI flash device on HiFive Unleashed has 32MiB Size. This patch adds SPI flash environment after U-Boot proper partition with a size of 128KiB. SPI flash partition layout(32MiB): 0 - 34 : reserved for GPT header 35 - 39 : unused 40 - 2087 : loader1 (SPL, FSBL) 2088 - 10279 : loader2 (U-Boot proper, U-Boot) 10280 - 10535 : environment 10536 - 65494 : rootfs 65528 - 65536 : distro script Note: the loader1 must start from 40th sector even though there are 6 free sectors prior since 40th sector is nearest flash sector boundary.  Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Tested-by: Bin Meng <bin.meng@windriver.com>
2020-07-24sifive: fu540: Add Booting from SPIJagan Teki
Add booting from SPI for SiFive Unleashed board. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Tested-by: Bin Meng <bin.meng@windriver.com>
2020-07-24riscv: Make SiFive HiFive Unleashed board boot againBin Meng
Commit 40686c394e53 ("riscv: Clean up IPI initialization code") caused U-Boot failed to boot on SiFive HiFive Unleashed board. The codes inside arch_cpu_init_dm() may call U-Boot timer APIs before the call to riscv_init_ipi(). At that time the timer register base (e.g.: the SiFive CLINT device in this case) is unknown yet. It might be the name riscv_init_ipi() that misleads people to only consider it is related to IPI, but in fact the timer capability is provided by the same SiFive CLINT device that provides the IPI. Timer capability is needed for both UP and SMP. Considering that the original refactor does have benefits, that it makes the IPI code more similar to U-Boot initialization idioms. It also removes some quite ugly macros. Let's do the minimal revert instead of a complete revert, plus a fixes to arch_cpu_init_dm() to consider the SPL case. Fixes: 40686c394e53 ("riscv: Clean up IPI initialization code") Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Sean Anderson <seanga2@gmail.com> Tested-by: Leo Liang <ycliang@andestech.com>
2020-07-06Merge branch 'next'Tom Rini
Merge all outstanding changes from the current next branch in now that we have released.
2020-07-03riscv: use log functions in fdt_fixupHeinrich Schuchardt
Replace printf() and debug() by log_err() and log_debug(). "No reserved memory region found in source FDT\n" is not an error but a debug information. %s/can not/cannot/ - use the more common spelling. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-07-03riscv: sifive: fu540: enable all cache ways from U-Boot properPragnesh Patel
Add L2 cache node to enable all cache ways from U-Boot proper. Signed-off-by: Pragnesh Patel <pragnesh.patel@sifive.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
2020-07-03riscv: Use optimized version of fdtdec_get_addr_size_no_parentAtish Patra
fdtdec_get_addr_size_no_parent is not an optimized version if parent node is already available with the caller. Use fdtdec_get_addr_size_auto_parent to read the "reg" property Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Bin Meng <bin.meng@windriver.com>
2020-07-03riscv: Do not return error if reserved node already existsAtish Patra
Not all errors are fatal. If a reserved memory node already exists in the destination device tree, we can continue to boot without failing. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Bin Meng <bin.meng@windriver.com>
2020-07-03riscv: Do not build reset.c if SYSRESET is onBin Meng
SYSRESET uclass driver already provides all the reset APIs, hence exclude our own ad-hoc reset.c implementation. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Sagar Kadam <sagar.kadam@sifive.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com>
2020-07-02riscv: Enable CONFIG_OF_BOARD_FIXUP by default for OF_SEPARATEBin Meng
Starting from OpenSBI v0.7, the SBI firmware inserts/fixes up the reserved memory node for PMP protected memory regions. All RISC-V boards need to copy the reserved memory node from the device tree provided by the firmware to the device tree used by U-Boot. Turn on CONFIG_OF_BOARD_FIXUP by default for OF_SEPARATE. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Rick Chen <rick@andestech.com>
generated by cgit v1.2.3 (git 2.0.4) at 2024-07-01 22:15:24 +0000